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Reyes A, Torres S, Robinson TL, Rentería MA, Clark AL. Integrating Diversity, Culture, and Equity into the Neuropsychological Evaluation. Neurol Clin 2024; 42:959-979. [PMID: 39343487 DOI: 10.1016/j.ncl.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
Cognition is influenced by a host of factors, including the patient's medical, psychiatric, and developmental history; sociocultural and demographic factors; modifiable behavioral factors; and structural and social determinants of health. Neuropsychological approaches include interpreting test data in the context of these factors to classify impairment and derive a cognitive diagnosis accurately. Failure to integrate an individual's sociodemographic, sociocultural, and developmental background can result in diagnostic errors, which have critical clinical implications for patient care.
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Affiliation(s)
- Anny Reyes
- Department of Radiation Medicine & Applied Sciences, University of California, San Diego, CA, USA.
| | - Stephanie Torres
- Department of Psychiatry, Massachusetts General Hospital, One Bowdoin Square, Suite 701, Boston, MA 021142, USA
| | - Talia L Robinson
- Division of Neuropsychology, Department of Neurology, Brigham and Women's Hospital, 60 Fenwood Road, Boston, MA 02115, USA
| | - Miguel Arce Rentería
- Department of Neurology, Columbia University, 622 West 168th Street, New York, NY, USA
| | - Alexandra L Clark
- Department of Psychology, The University of Texas at Austin, 108 East Dean Keeton, Stop A8000, SEA 3.324, Austin, TX 78712, USA
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Reyes A, Prabhakaran D, Banegas MP, Shih JJ, Iragui-Madoz VJ, Almane DN, Ferguson L, Jones JE, Busch RM, Hermann BP, McDonald CR. Individual- and community-level social determinants of health are associated with cognition in older adults with focal epilepsy. Epilepsy Behav 2024; 158:109927. [PMID: 38970893 DOI: 10.1016/j.yebeh.2024.109927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/26/2024] [Accepted: 06/27/2024] [Indexed: 07/08/2024]
Abstract
OBJECTIVE Epilepsy is associated with significant health disparities, including access to specialized care and adverse outcomes that have been associated with several social determinants of health (SDOH). We sought to examine the relationship between individual- and community-level SDOH and cognitive outcomes in older adults with epilepsy. MATERIALS AND METHODS We collected clinical, SDOH, and neuropsychological data in 57 older adults with epilepsy. Individual-level SDOH included patient factors (quality of education, income, insurance, marital status) and early-life environmental factors (parental education and occupation, childhood employment). Neighborhood deprivation was measured with the Area Deprivation Index (ADI). Stepwise regressions were conducted to examine the independent contribution of individual-level SDOH to cognitive performance, and Spearman rho correlations were conducted to examine the relationship between ADI and cognitive performance. The SDOH profiles of patients who met the criteria for cognitive impairment were examined. RESULTS After controlling for clinical variables, patient factors (public health insurance, poorer quality of education) and early-life environmental factors (lower mother's education, lower father's and mother's occupational complexity, history of childhood employment) were significant predictors of lower performance on measures of global cognition, verbal learning and memory, processing speed, and executive function. Higher ADI values (greater disadvantage) were associated with lower scores on global cognitive measures, verbal learning and memory, and executive function. Patients who met criteria for cognitive impairment had, on average, a greater number of adverse SDOH, including lower household incomes and father's education, and higher ADI values compared to those who were cognitively intact. CONCLUSION We provide new evidence of the role of individual- and community-level SDOH on cognitive outcomes in older adults with epilepsy. This emerging literature highlights the need to examine SDOH beyond epilepsy-related clinical factors. These data could inform the development of interventions focused on increasing access to epilepsy care, education, and resources and promoting brain and cognitive health within the most at-risk communities.
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Affiliation(s)
- Anny Reyes
- Department of Radiation Medicine & Applied Sciences, University of California, San Diego, San Diego, CA, USA.
| | - Divya Prabhakaran
- Department of Radiation Medicine & Applied Sciences, University of California, San Diego, San Diego, CA, USA
| | - Matthew P Banegas
- Department of Radiation Medicine & Applied Sciences, University of California, San Diego, San Diego, CA, USA
| | - Jerry J Shih
- Department of Neuroscience, University of California, San Diego, San Diego, CA, USA
| | | | - Dace N Almane
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, USA
| | - Lisa Ferguson
- Epilepsy Center, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jana E Jones
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, USA
| | - Robyn M Busch
- Epilepsy Center, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA; Department of Neurology, Cleveland Clinic, Cleveland, OH, USA
| | - Bruce P Hermann
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, USA
| | - Carrie R McDonald
- Department of Radiation Medicine & Applied Sciences, University of California, San Diego, San Diego, CA, USA; Department of Psychiatry, University of California, San Diego, San Diego, CA, USA
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Lemke J, D'Alessio AS, Briggs FBS, Bailey C. Influence of social determinants of health and adversity on computerized neurocognitive assessment. Clin Neuropsychol 2024:1-20. [PMID: 38993089 DOI: 10.1080/13854046.2024.2375801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 06/28/2024] [Indexed: 07/13/2024]
Abstract
Introduction: Social determinants of health and adversity, including poverty, maltreatment, and neighborhood deprivation, are individual-level factors that may significantly affect baseline neurocognitive testing and management that have yet to be thoroughly explored within the computerized neurocognitive assessment.Objectives: Examine individual-level experiences of poverty, abuse, neighborhood deprivation, and social mobility on computerized cognitive testing.Methods: The sample included 3,845 student-athletes who completed a baseline Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) and were enrolled in the Child-Household Integrated Longitudinal Data database. Multivariable linear regressions were used to assess independent variables of Supplemental Nutrition Assistance Program enrollment, abuse or neglect cases, Area Deprivation Index scores, and other demographic factors on four baseline ImPACT composite scores: verbal and visual memory, visuomotor, and reaction time.Results: Individual-level factors of persistent poverty and neighborhood deprivation were associated with lower composite scores; however, upward social mobility was not significantly associated with cognitive performance. The effects of mother's race on computerized cognitive testing performance were attenuated when accounting for measures of adversity.Conclusion: Findings highlight the importance of social determinants of health in computerized neurocognitive testing to ensure more culturally sensitive and precise understanding of athletic baselines.
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Affiliation(s)
- Jillian Lemke
- Neurological Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Alena Sorensen D'Alessio
- Department of Epidemiology, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Farren B S Briggs
- Department of Public Health Sciences, Division of Epidemiology, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Christopher Bailey
- Neurological Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Department of Neurology, Case Western Reserve University School of Medicine, Neurological Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
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González HM, Tarraf W, Stickel AM, Morlett A, González KA, Ramos AR, Rundek T, Gallo LC, Talavera GA, Daviglus ML, Lipton RB, Isasi C, Lamar M, Zeng D, DeCarli C. Glycemic Control, Cognitive Aging, and Impairment Among Diverse Hispanic/Latino Individuals: Study of Latinos- Investigation of Neurocognitive Aging (Hispanic Community Health Study/Study of Latinos). Diabetes Care 2024; 47:1152-1161. [PMID: 38684486 PMCID: PMC11208749 DOI: 10.2337/dc23-2003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 04/03/2024] [Indexed: 05/02/2024]
Abstract
OBJECTIVE Hispanic/Latino individuals in the U.S. have the highest prevalence of undiagnosed and untreated diabetes and are at increased risk for cognitive impairment. In this study, we examine glycemic control in relation to cognitive aging and impairment in a large prospective cohort of middle-aged and older Hispanic/Latino individuals of diverse heritages. RESEARCH DESIGN AND METHODS Study of Latinos-Investigation of Neurocognitive Aging (SOL-INCA) is a Hispanic Community Health Study/Study of Latinos (HCHS/SOL) ancillary study. HCHS/SOL is a multisite (Bronx, NY; Chicago, IL; Miami, FL; and San Diego, CA), probability sampled prospective cohort study. SOL-INCA enrolled 6,377 diverse Hispanic/Latino individuals aged 50 years and older (2016-2018). The primary outcomes were cognitive function, 7-year cognitive decline, and mild cognitive impairment (MCI). The primary glycemia exposure variables were measured from fasting blood samples collected at HCHS/SOL visit 1 (2008-2011). RESULTS Visit 1 mean age was 56.5 years ± 8.2 SD, and the average glycosylated hemoglobin A1C (HbA1c) was 6.12% (43.5 ± 14.6 mmol/mol). After covariate adjustment, higher HbA1c was associated with accelerated 7-year global (b = -0.045; 95% CI -0.070; -0.021; in z score units) and executive cognitive decline and a higher prevalence of MCI (odds ratio 1.20; 95% CI 1.11; 1.29). CONCLUSIONS Elevated HbA1c levels were associated with 7-year executive cognitive decline and increased MCI risk among diverse middle-aged and older Hispanic/Latino individuals. Our findings indicate that poor glycemic control in midlife may pose significant risks for cognitive decline and MCI later in life among Hispanic/Latino individuals of diverse heritages.
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Affiliation(s)
- Hector M. González
- Department of Neurosciences and the Shiley-Marcos Alzheimer’s Disease Research Center, University of California San Diego, San Diego, CA
| | - Wassim Tarraf
- Institute of Gerontology & Department of Healthcare Sciences, Wayne State University, Detroit, MI
| | | | - Alejandra Morlett
- Department of Neurosciences and the Shiley-Marcos Alzheimer’s Disease Research Center, University of California San Diego, San Diego, CA
| | - Kevin A. González
- Department of Neurosciences and the Shiley-Marcos Alzheimer’s Disease Research Center, University of California San Diego, San Diego, CA
| | - Alberto R. Ramos
- Department of Neurology and Evelyn F. McKnight Brain Institute, University of Miami, Miami, FL
| | - Tatjana Rundek
- Department of Neurology and Evelyn F. McKnight Brain Institute, University of Miami, Miami, FL
| | - Linda C. Gallo
- Department of Psychology, San Diego State University, San Diego, CA
| | | | - Martha L. Daviglus
- Institute for Minority Health Research, University of Illinois College of Medicine at Chicago, Chicago, IL
| | | | - Carmen Isasi
- Albert Einstein College of Medicine, New York, NY
| | - Melissa Lamar
- Institute for Minority Health Research, University of Illinois College of Medicine at Chicago, Chicago, IL
- Department of Psychiatry & Behavioral Sciences and Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL
| | - Donglin Zeng
- Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC
| | - Charles DeCarli
- Department of Neurology and Alzheimer’s Disease Center, University of California Davis, Sacramento, CA
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Wasserman JS, Holtzer R. Depressive Symptoms are Associated with Decline Over Time in Verbal Fluency Performance in Female but Not Male Community-Dwelling Older Adults. Exp Aging Res 2024; 50:360-375. [PMID: 36989442 PMCID: PMC10539484 DOI: 10.1080/0361073x.2023.2195295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 03/16/2023] [Indexed: 03/31/2023]
Abstract
OBJECTIVE The current study was designed to examine associations between depressive symptoms and longitudinal declines in category and letter fluency performance in a gender-stratified sample of older adults. METHOD Participants were community-residing older adults (females: n = 289; males: n = 233) followed annually (2011-2018) as part of a cohort study conducted at Albert Einstein College of Medicine in New York. Depressive symptoms were assessed using the Geriatric Depression Scale (GDS). Standard forms assessed category and letter fluency performance. Participants were dementia-free during study enrollment. RESULTS The presence of baseline depressive symptoms suggestive of subclinical depression was associated with a worse longitudinal decline in category fluency performance in female but not male participants. These associations remained significant when excluding participants with prevalent and incident mild cognitive impairment and incident dementia. Irrespective of gender, letter fluency performance did not decline over time and was not influenced by the presence of depressive symptoms. DISCUSSION The present study's results can aid in identification of older adults who may be at greater risk for cognitive decline, and add to the limited literature examining the influence of gender on longitudinal associations between depressive symptoms and verbal fluency performance.
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Affiliation(s)
| | - Roee Holtzer
- Ferkauf Graduate School of Psychology, Yeshiva University, Bronx, New York, USA
- Department of Neurology, Albert Einstein College of Medicine, Bronx, New York, USA
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Devora PV, Motes MA, Hilsabeck RC, Gonzales M, Detoledo J, Maestre G, Hart J. Analyzing direct effects of education level and estimated IQ between cognitively intact Mexican Americans and Non-Hispanic whites on a confrontational naming task. APPLIED NEUROPSYCHOLOGY. ADULT 2024:1-10. [PMID: 38470863 DOI: 10.1080/23279095.2024.2326587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Confrontational naming is widely used in diagnosing neurodegenerative disorders like MCI and dementia, and previous research indicates that healthy Non-Hispanic Whites outperform Hispanics in such tasks. However, understanding the factors contributing to score differences among ethnic groups remains limited. This study focuses on cognitively intact Mexican Americans and Non-Hispanic White older adults from the TARCC Hispanic Cohort project. Hierarchical regression analyses reveal that sex, age, ethnicity, education level, and estimated IQ significantly predict performance on the Boston Naming Test (BNT). Notably, education level and estimated IQ more strongly influence BNT performance in Mexican Americans than in Non-Hispanic Whites. When controlling for education level, estimated IQ has a more pronounced impact on BNT performance in aging Mexican Americans compared to Non-Hispanic Whites. Conversely, after controlling for estimated IQ, the influence of education level is weaker for Mexican Americans than Non-Hispanic Whites. These findings emphasize the need for careful evaluation of confrontational naming task scores in diverse ethnic groups, emphasizing the critical role of education and estimated IQ in understanding performance disparities.
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Affiliation(s)
- Paulina Vanessa Devora
- The University of Texas at Dallas School of Behavioral and Brain Sciences, Richardson, TX, USA
| | - Michael A Motes
- The University of Texas at Dallas School of Behavioral and Brain Sciences, Richardson, TX, USA
| | - Robin C Hilsabeck
- The University of Texas at Austin Dell Medical School, Austin, TX, USA
| | - Mitzi Gonzales
- The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - John Detoledo
- Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Gladys Maestre
- The University of Texas Rio Grande Valley, Brownsville, TX, USA
| | - John Hart
- The University of Texas at Dallas School of Behavioral and Brain Sciences, Richardson, TX, USA
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McElwee C, Lopez Hernandez DW. The influence of early life socio-environmental factors on executive performance in a healthy adult sample. APPLIED NEUROPSYCHOLOGY. ADULT 2024:1-12. [PMID: 38447195 DOI: 10.1080/23279095.2024.2323630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
OBJECTIVE Attempts have been made (with research efforts encouraged) to deconstruct the "race" concept into language, cultural, and life experience variables that can help explain performance differences found between ethnic groups (Romero et al., 2009). The extant empirical literature reveals that early environmental factors and life experiences (e.g., socioeconomic status) are related to cognitive test performance in adulthood (Byrd et al., 2006). This study examined the explanatory value of early life childhood resources in the relationship between ethnicity and neuropsychological test performance in adulthood. PARTICIPANTS/ METHODS Neurologically and psychologically healthy African American (n = 40), Caucasian (n = 14), and Hispanic (n = 107) college students ranging from 19-38 years of age. On average, participants had completed around 13 years of education, indicating that the majority were in the early stages of their undergraduate studies and mostly consisted of females (72%). Each participant completed a comprehensive neuropsychological battery that included tests of executive function and an extensive background questionnaire. RESULTS A one-way analysis of variance (ANOVA) revealed that the CA group was significantly older (F (2, 160) = 18.38, p = .045) compared to the AA and H groups, but the groups did not differ in terms of number of years of educations or gender. Also, an ANOVA revealed significant group test performance differences on the Stroop-C [F (2, 160) = 1.53, p = .047], but not on the TMT-B and COWAT. Furthermore, a Tukey post hoc revealed that there were no significant differences in test performance on Stroop-C between the groups. Hierarchical multiple regression analyses revealed that group performance differences on executive function tests were medium or non-existent and only partially explained by years of education and early life financial resources. CONCLUSION The results are discussed in light of the existing literature, study strengths and limitations, as well as directions for future research. This research can aid in pinpointing variables crucial for interpreting differences in neuropsychological assessments among diverse populations, holding potential implications for intervention research and policy settings. It is particularly relevant in the context of the continuously evolving social, political, and economic landscapes of societies.
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Affiliation(s)
- C McElwee
- Department of Psychology, University of California, Riverside, CA, USA
| | - D W Lopez Hernandez
- Department of Psychology, California State University, Dominguez Hills, CA, USA
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8
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Denning JH, Horner MD. The impact of race and other demographic factors on the false positive rates of five embedded Performance Validity Tests (PVTs) in a Veteran sample. J Clin Exp Neuropsychol 2024; 46:25-35. [PMID: 38353039 DOI: 10.1080/13803395.2024.2314737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 01/11/2024] [Indexed: 05/12/2024]
Abstract
INTRODUCTION It is common to use normative adjustments based on race to maintain accuracy when interpreting cognitive test results during neuropsychological assessment. However, embedded performance validity tests (PVTs) do not adjust for these racial differences and may result in elevated rates of false positives in African American/Black (AA) samples compared to European American/White (EA) samples. METHODS Veterans without Major Neurocognitive Disorder completed an outpatient neuropsychological assessment and were deemed to be performing in a valid manner (e.g., passing both the Test of Memory Malingering Trial 1 (TOMM1) and the Medical Symptom Validity Test (MSVT), (n = 531, EA = 473, AA = 58). Five embedded PVTs were administered to all patients: WAIS-III/IV Processing Speed Index (PSI), Brief Visuospatial Memory Test-Revised: Discrimination Index (BVMT-R), TMT-A (secs), California Verbal Learning Test-II (CVLT-II) Forced Choice, and WAIS-III/IV Digit Span Scaled Score. Individual PVT false positive rates, as well as the rate of failing two or more embedded PVTs, were calculated. RESULTS Failure rates of two embedded PVTs (PSI, TMT-A), and the total number of PVTs failed, were higher in the AA sample. The PSI and TMT-A remained significantly impacted by race after accounting for age, education, sex, and presence of Mild Neurocognitive Disorder. There were PVT failure rates greater than 10% (and considered false positives) in both groups (AA: PSI, TMT-A, and BVMT-R, 12-24%; EA: BVMT-R, 17%). Failing 2 or more PVTs (AA = 9%, EA = 4%) was impacted by education and Mild Neurocognitive Disorder but not by race. CONCLUSIONS Individual (timed) PVTs showed higher false positive rates in the AA sample even after accounting for demographic factors and diagnosis of Mild Neurocognitive Disorder. Requiring failure on 2 or more embedded PVTs reduced false positive rates to acceptable levels across both groups (10% or less) and was not significantly influenced by race.
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Affiliation(s)
- John H Denning
- Mental Health Service, Ralph H. Johnson Veterans Affairs Health Care System, Charleston, SC, USA
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Michael David Horner
- Mental Health Service, Ralph H. Johnson Veterans Affairs Health Care System, Charleston, SC, USA
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, USA
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Márquez F, Tarraf W, Stickel AM, González KA, Testai FD, Cai J, Gallo LC, Talavera GA, Daviglus ML, Wassertheil-Smoller S, DeCarli C, Schneiderman N, González HM. Hypertension, Cognitive Decline, and Mild Cognitive Impairment Among Diverse Hispanics/Latinos: Study of Latinos-Investigation of Neurocognitive Aging Results (SOL-INCA). J Alzheimers Dis 2024; 97:1449-1461. [PMID: 38250769 DOI: 10.3233/jad-230424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
BACKGROUND Hypertension can have deleterious effects on cognitive function; however, few studies have examined its effects on cognition among Hispanics/Latinos. OBJECTIVE To assess associations between hypertension status with 1) change in cognitive performance, and 2) having mild cognitive impairment (MCI) among diverse Hispanics/Latinos. METHODS This population-based, prospective cohort, multisite study included Hispanic/Latino adults aged 45 to 72 years in enrolled in the Hispanic Community Health Study/Study of Latinos at Visit 1 (2008-2011; mean age of 63.40±8.24 years), and the Study of Latinos-Investigation of Neurocognitive Aging at Visit 2 (2016-2018), with a mean follow-up duration of 7 years (n = 6,173). Hypertension status was assessed at both visits: normotension (no hypertension), incident hypertension (only at Visit 2), and persistent hypertension (at both visits). We examined change in cognitive performance and having MCI (only assessed at Visit 2) relative to hypertension status and adjusted for demographics and cardiovascular disease risk factors. RESULTS Compared to normotension, persistent hypertension was associated with significantly increased decline in verbal fluency (β= -0.08; CI = [-0.16;-0.01]; p < 0.05), and processing speed (β= -0.11; CI = [-0.20;-0.02]; p < 0.05). Incident hypertension was not associated with significant change in cognitive performance. Both incident (OR = 1.70; CI = [1.16;2.50]; p < 0.01) and persistent hypertension (OR = 2.13; CI = [1.57;2.88]; p < 0.001) were associated with significantly higher odds ratios of having MCI. CONCLUSIONS These findings indicate that persistent hypertension is associated with clinical impairment and domain-specific cognitive decline in middle-aged and older Hispanics/Latinos. It underscores the importance of monitoring blood pressure in routine healthcare visits beginning at midlife in this population to reduce the burden of cognitive decline.
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Affiliation(s)
- Freddie Márquez
- Department of Neurosciences and the Shiley-Marcos Alzheimer's Disease Research Center, UC San Diego, San Diego, CA, USA
| | - Wassim Tarraf
- Institute of Gerontology & Department of Healthcare Sciences, Wayne State University, Detroit, MI, USA
| | - Ariana M Stickel
- Department of Neurosciences and the Shiley-Marcos Alzheimer's Disease Research Center, UC San Diego, San Diego, CA, USA
- Department of Psychology, San Diego State University, San Diego, CA, USA
| | - Kevin A González
- Department of Neurosciences and the Shiley-Marcos Alzheimer's Disease Research Center, UC San Diego, San Diego, CA, USA
| | - Fernando D Testai
- Department of Neurology and Rehabilitation, University of Illinois at Chicago, College of Medicine, Chicago, IL, USA
| | - Jianwen Cai
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Linda C Gallo
- Department of Psychology, San Diego State University, San Diego, CA, USA
| | - Gregory A Talavera
- Department of Psychology, San Diego State University, San Diego, CA, USA
| | - Martha L Daviglus
- Institute for Minority Health Research, University of Illinois at Chicago, College of Medicine, Chicago, IL, USA
| | - Sylvia Wassertheil-Smoller
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, New York, NY, USA
| | - Charles DeCarli
- Department of Neurology and Alzheimer's Disease Center, UC Davis, Sacramento, CA, USA
| | | | - Hector M González
- Department of Neurosciences and the Shiley-Marcos Alzheimer's Disease Research Center, UC San Diego, San Diego, CA, USA
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Kiselica AM, Johnson E, Lewis KR, Trout K. Examining racial disparities in the diagnosis of mild cognitive impairment. APPLIED NEUROPSYCHOLOGY. ADULT 2023; 30:749-756. [PMID: 34554020 PMCID: PMC8940745 DOI: 10.1080/23279095.2021.1976778] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Black individuals are less likely to receive an accurate diagnosis of mild cognitive impairment (MCI) than their White counterparts, possibly because diagnoses are typically made by a physician, often without reference to objective neuropsychological test data. We examined racial differences in actuarial MCI diagnoses among individuals diagnosed with MCI via semi-structured clinical interview (the Clinical Dementia Rating) to examine for possible biases in the diagnostic process. Participants were drawn from the National Alzheimer's Coordinating Center Uniform Data Set and included 491 individuals self-identifying as Black and 2,818 individuals self-identifying as White. Chi-square tests were used to examine racial differences in rates of low scores for each cognitive test (domains assessed included attention, processing speed/executive functioning, memory, language, and visual skills). Next, we tested for racial differences in probability of meeting actuarial criteria for MCI by race. Compared to Black participants diagnosed with MCI via clinical interview, White individuals diagnosed with MCI via clinical interview demonstrated significantly higher rates of low demographically-adjusted z-scores on tests of memory, attention, processing speed, and verbal fluency. Furthermore, White individuals were significantly more likely to meet actuarial criteria for MCI (71.60%) than Black individuals (57.90%). Results suggest there may be bias in MCI classification based on semi-structured interview, leading to over diagnosis among Black individuals and/or under diagnosis among White individuals. Examination of neuropsychological test data and use of actuarial approaches may reduce racial disparities in the diagnosis of MCI. Nonetheless, issues related to race-based norming and differential symptom presentations complicate interpretation of results.
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Affiliation(s)
- Andrew M. Kiselica
- Department of Health Psychology, University of Missouri, Columbia, MO, USA
| | - Ellen Johnson
- Department of Health Psychology, University of Missouri, Columbia, MO, USA
- Department of Psychology, Ohio University, Athens, OH, USA
| | - Kaleea R. Lewis
- Department of Public Health, University of Missouri, Columbia, MO, USA
- Department of Women’s and Gender Studies, University of Missouri, Columbia, MO, USA
| | - Kate Trout
- Department of Health Sciences, University of Missouri, Columbia, MO, USA
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11
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Garcia S, Askew RL, Kavcic V, Shair S, Bhaumik AK, Rose E, Campbell S, May N, Hampstead BM, Dodge HH, Heidebrink JL, Paulson HL, Giordani B. Mild Cognitive Impairment Subtype Performance in Comparison to Healthy Older Controls on the NIH Toolbox and Cogstate. Alzheimer Dis Assoc Disord 2023; 37:328-334. [PMID: 37862614 PMCID: PMC10873007 DOI: 10.1097/wad.0000000000000587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 09/06/2023] [Indexed: 10/22/2023]
Abstract
BACKGROUND Early detection is necessary for the treatment of dementia. Computerized testing has become more widely used in clinical trials; however, it is unclear how sensitive these measures are to early signs of neurodegeneration. We investigated the use of the NIH Toolbox-Cognition (NIHTB-CB) and Cogstate-Brief computerized neuropsychological batteries in the identification of mild cognitive impairment (MCI) versus healthy older adults [healthy control (HC)] and amnestic (aMCI) versus nonamnestic MCI (naMCI). Exploratory analyses include investigating potential racial differences. METHODS Two hundred six older adults were diagnosed as aMCI (n = 58), naMCI (n = 15), or cognitively healthy (HC; n = 133). RESULTS The NIH Toolbox-CB subtests of Flanker, Picture Sequence Memory, and Picture Vocabulary significantly differentiated MCI from HC. Further, subtests from both computerized batteries differentiated patients with aMCI from those with naMCI. Although the main effect of race differences was noted on tests and in diagnostic groups was significant, there were no significant race-by-test interactions. CONCLUSIONS Computer-based subtests vary in their ability to help distinguish MCI subtypes, though these tests provide less expensive and easier-to-administer clinical screeners to help identify patients early who may qualify for more comprehensive evaluations. Further work is needed, however, to refine computerized tests to achieve better precision in distinguishing impairment subtypes.
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Affiliation(s)
- Sarah Garcia
- Psychology Department, Stetson University, DeLand, FL, USA
| | | | | | - Sarah Shair
- Departments of Psychiatry, Neurology, Psychology, and School of Nursing, University of Michigan, Ann Arbor, MI, USA
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
| | - Arijit K Bhaumik
- Departments of Psychiatry, Neurology, Psychology, and School of Nursing, University of Michigan, Ann Arbor, MI, USA
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
| | - Edna Rose
- Departments of Psychiatry, Neurology, Psychology, and School of Nursing, University of Michigan, Ann Arbor, MI, USA
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
| | - Stephen Campbell
- Departments of Psychiatry, Neurology, Psychology, and School of Nursing, University of Michigan, Ann Arbor, MI, USA
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
| | - Nicolas May
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
| | - Benjamin M. Hampstead
- Departments of Psychiatry, Neurology, Psychology, and School of Nursing, University of Michigan, Ann Arbor, MI, USA
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
- VA Ann Arbor Healthcare System, Ann Arbor, MI, USA
| | - Hiroko H. Dodge
- Layton Aging and Alzheimer’s Disease Center, Department of Neurology, Oregon Health & Science University, Portland, OR
| | - Judith L Heidebrink
- Departments of Psychiatry, Neurology, Psychology, and School of Nursing, University of Michigan, Ann Arbor, MI, USA
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
| | - Henry L Paulson
- Departments of Psychiatry, Neurology, Psychology, and School of Nursing, University of Michigan, Ann Arbor, MI, USA
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
| | - Bruno Giordani
- Departments of Psychiatry, Neurology, Psychology, and School of Nursing, University of Michigan, Ann Arbor, MI, USA
- Michigan Alzheimer’s Disease Research Center, Ann Arbor, MI, USA
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Robinson T, Klinger H, Buckley R, Deters KD, Quiroz YT, Rentz D, Rabin JS, Sperling RA, Amariglio RE. Subjective cognitive decline across ethnoracial groups in the A4 study. Alzheimers Dement 2023; 19:4084-4093. [PMID: 37218387 PMCID: PMC10524317 DOI: 10.1002/alz.13138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/29/2023] [Accepted: 04/24/2023] [Indexed: 05/24/2023]
Abstract
INTRODUCTION The associations between subjective cognitive decline (SCD), cognition, and amyloid were explored across diverse participants in the A4 study. METHODS Five thousand one hundred and fifty-one non-Hispanic White, 262 non-Hispanic Black, 179 Hispanic-White, and 225 Asian participants completed the Preclinical Alzheimer Cognitive Composite (PACC), self- and study partner-reported Cognitive Function Index (CFI). A subsample underwent amyloid positron emission tomography (18 F-florbetapir) (N = 4384). We examined self-reported CFI, PACC, amyloid, and study partner-reported CFI by ethnoracial group. RESULTS The associations between PACC-CFI and amyloid-CFI were moderated by race. The relationships were weaker or non-significant in non-Hispanic Black and Hispanic White groups. Depression and anxiety scores were stronger predictors of CFI in these groups. Despite group differences in the types of study partners, self- and study partner-CFI were congruent across groups. DISCUSSION SCD may not uniformly relate to cognition or AD biomarkers in different ethnoracial groups. Nonetheless, self- and study partner-SCD were congruent despite differences in study partner type. Highlights Association between SCD and objective cognition was moderated by ethnoracial group. Association between SCD and amyloid was moderated by ethnoracial group. Depression and anxiety were stronger predictors of SCD in Black and Hispanic groups. Study-partner and self-reported SCD are congruent across groups. Study-partner report was consistent despite difference in study partner types.
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Affiliation(s)
- Talia Robinson
- Department of Neurology, Brigham and Women’s Hospital and Harvard Medical School, Boston MA, 02115, USA
| | - Hannah Klinger
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Rachel Buckley
- Department of Neurology, Brigham and Women’s Hospital and Harvard Medical School, Boston MA, 02115, USA
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
- Melbourne School of Psychological Science and Florey Institute, University of Melbourne, Victoria, 3052, Australia
| | - Kacie D. Deters
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Yakeel T. Quiroz
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Dorene Rentz
- Department of Neurology, Brigham and Women’s Hospital and Harvard Medical School, Boston MA, 02115, USA
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
- Center for Alzheimer Research and Treatment, Department of Neurology, Brigham and Women’s Hospital, Boston, Massachusetts, 02115, USA
| | - Jennifer S. Rabin
- Harquail Centre for Neuromodulation, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada, M4N 3M5
- Rehabilitation Sciences Institute, University of Toronto, Canada, M5G 1V7
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Reisa A. Sperling
- Department of Neurology, Brigham and Women’s Hospital and Harvard Medical School, Boston MA, 02115, USA
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
- Center for Alzheimer Research and Treatment, Department of Neurology, Brigham and Women’s Hospital, Boston, Massachusetts, 02115, USA
| | - Rebecca E. Amariglio
- Department of Neurology, Brigham and Women’s Hospital and Harvard Medical School, Boston MA, 02115, USA
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
- Center for Alzheimer Research and Treatment, Department of Neurology, Brigham and Women’s Hospital, Boston, Massachusetts, 02115, USA
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13
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Loizos M, Zhu CW, Akrivos J, Sewell M, Li C, Neugroschl J, Melnick J, Ljekocevic M, Martin J, Grossman H, Aloysi A, Schimming C, Sano M. Evaluating memory testing to distinguish dementia severity among White, Black, and Spanish-speaking individuals in the Uniform Data Set (UDS). Alzheimers Dement 2023; 19:3625-3634. [PMID: 36840724 PMCID: PMC10440216 DOI: 10.1002/alz.13002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 02/26/2023]
Abstract
INTRODUCTION Little work has compared the effectiveness of using multiple types of memory tests alone or in combination to distinguish dementia severity in diverse research cohorts including Black individuals and Spanish speakers. Here we evaluate word list and paragraph recall tests to distinguish cognitively normal, mild cognitively impaired, and those with Alzheimer's disease in diverse cohorts. METHODS Using Uniform Data Set (UDS) and site-specific supplemental data, logistic regression models and receiver operating characteristic-area under the curve were used to compare paragraph recall versus word list in differentiating among Clinical Dementia Rating (CDR) scale level. RESULTS Results reveal high discriminability for all groups and no difference between either test in distinguishing between CDR levels. Combining tests improved discriminability for the whole group but did not for Black individuals or Spanish speakers. DISCUSSION Our findings indicate that using multiple memory tests may not improve differentiation between cognitive impairment levels for diverse cohorts. The burden of added testing may be a barrier for maximizing inclusion of under-represented groups in research.
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Affiliation(s)
- Maria Loizos
- Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Carolyn W. Zhu
- Icahn School of Medicine at Mount Sinai, New York, NY USA
- James J. Peters VA Medical Center, Bronx, NY, USA
| | - Jimmy Akrivos
- Icahn School of Medicine at Mount Sinai, New York, NY USA
| | | | - Clara Li
- Icahn School of Medicine at Mount Sinai, New York, NY USA
| | | | | | | | - Jane Martin
- Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Hillel Grossman
- Icahn School of Medicine at Mount Sinai, New York, NY USA
- James J. Peters VA Medical Center, Bronx, NY, USA
| | - Amy Aloysi
- Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Corbett Schimming
- Icahn School of Medicine at Mount Sinai, New York, NY USA
- James J. Peters VA Medical Center, Bronx, NY, USA
| | - Mary Sano
- Icahn School of Medicine at Mount Sinai, New York, NY USA
- James J. Peters VA Medical Center, Bronx, NY, USA
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14
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McDonough IM, Cody SL, Harrell ER, Garrett SL, Popp TE. Cognitive differences across ethnoracial category, socioeconomic status across the Alzheimer's disease spectrum: Can an ability discrepancy score level the playing field? Mem Cognit 2023; 51:543-560. [PMID: 35338450 DOI: 10.3758/s13421-022-01304-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2022] [Indexed: 12/29/2022]
Abstract
An ability discrepancy (crystallized minus fluid abilities) might be a personally relevant cognitive marker of risk for Alzheimer's disease (AD) and might help reduce measurement bias often present in traditional measures of cognition. In a large national sample of adults aged 60-104 years (N = 14,257), we investigated whether the intersectionality of group characteristics previously shown to pose a risk for AD including ethnoracial category, socioeconomic status, and sex (a) differed in ability discrepancy compared to traditional neuropsychological tests and (b) moderated the relationship between an ability discrepancy and AD symptom severity. In cognitively normal older adults, results indicated that across each decade, fluid and memory composite scores generally exhibited large group differences with sex, education, and ethnoracial category. In contrast, the ability discrepancy score showed much smaller group differences, thus removing much of the biases inherent in the tests. Women with higher education differed in discrepancy performance from other groups, suggesting a subgroup in which this score might reduce bias to a lesser extent. Importantly, a greater ability discrepancy was associated with greater AD symptom severity across the AD continuum. Subgroup analyses suggest that this relationship holds for all groups except for some subgroups of Hispanic Americans. These findings suggest that an ability discrepancy measure might be a better indicator of baseline cognition than traditional measures that show more egregious measurement bias across diverse groups of people.
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Affiliation(s)
- Ian M McDonough
- Department of Psychology, The University of Alabama, Box 870348, Tuscaloosa, AL, 35487, USA.
| | - Shameka L Cody
- College of Nursing, The University of Alabama, Tuscaloosa, AL, USA
| | - Erin R Harrell
- Department of Psychology, The University of Alabama, Box 870348, Tuscaloosa, AL, 35487, USA
| | | | - Taylor E Popp
- Department of Psychology, The University of Alabama, Box 870348, Tuscaloosa, AL, 35487, USA
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15
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Ji L, Zhaoyang R, Jiao J, Schade M, Bertisch S, Derby C, Buxton O, Gamaldo A. Discrimination and Education Quality Moderate the Association of Sleep With Cognitive Function in Older Black Adults: Results From the Einstein Aging Study. J Gerontol B Psychol Sci Soc Sci 2023; 78:596-608. [PMID: 36420651 PMCID: PMC10066742 DOI: 10.1093/geronb/gbac183] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES Heterogeneity among Black adults' experiences of discrimination and education quality independently influence cognitive function and sleep, and may also influence the extent to which sleep is related to cognitive function. We investigated the effect of discrimination on the relationship between objective sleep characteristics and cognitive function in older Black adults with varying education quality. METHOD Cross-sectional analyses include Black participants in the Einstein Aging Study (N = 104, mean age = 77.2 years, 21% males). Sleep measures were calculated from wrist actigraphy (15.4 ± 1.3 days). Mean ambulatory cognitive function (i.e., spatial working memory, processing speed/visual attention, and short-term memory binding) was assessed with validated smartphone-based cognitive tests (6 daily). A modified Williams Everyday Discrimination Scale measured discriminatory experiences. Linear regression, stratified by reading literacy (an indicator of education quality), was conducted to investigate whether discrimination moderated associations between sleep and ambulatory cognitive function for individuals with varying reading literacy levels. Models controlled for age, income, sleep-disordered breathing, and sex assigned at birth. RESULTS Higher reading literacy was associated with better cognitive performance. For participants with both lower reading literacy and more discriminatory experiences, longer mean sleep time was associated with slower processing speed, and lower sleep quality was associated with worse working memory. Later sleep midpoint and longer nighttime sleep were associated with worse spatial working memory for participants with low reading literacy, independent of their discriminatory experiences. DISCUSSION Sociocultural factors (i.e., discrimination and education quality) can further explain the association between sleep and cognitive functioning and cognitive impairment risk among older Black adults.
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Affiliation(s)
- Linying Ji
- Department of Biobehavioral Health, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Ruixue Zhaoyang
- Center for Healthy Aging, Pennsylvania State University, University Park, Pennsylvania, USA
| | - June L Jiao
- Department of Biobehavioral Health, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Margeaux M Schade
- Department of Biobehavioral Health, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Suzanne Bertisch
- Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Carol A Derby
- Saul R. Korey Department of Neurology, and Department of Epidemiology and Population Health, Albert Einstein College of Medicine, The Bronx, New York, USA
| | - Orfeu M Buxton
- Department of Biobehavioral Health, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Alyssa A Gamaldo
- Department of Human Development and Family Studies, Pennsylvania State University, University Park, Pennsylvania, USA
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16
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Del Bene VA, Gerstenecker A, Lazar RM. Formal Neuropsychological Testing: Test Batteries, Interpretation, and Added Value in Practice. Clin Geriatr Med 2023; 39:27-43. [PMID: 36404031 DOI: 10.1016/j.cger.2022.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Neuropsychologists evaluate patients for cognitive decline and dementia, using validated psychometric tests, along with behavioral observation, record review, clinical interview, and information about psychological functioning, to evaluate brain-behavior relationships and aid in differential diagnosis and treatment planning. Also considered are premorbid functioning, education, sex, socioeconomic status, primary language, culture, and race-related health disparities when selecting tests, interpreting performance, and providing a diagnostic impression. Neuropsychologists provide diagnostic clarity, explain symptoms and likely disease course to patients and family members, and assist the family with future planning, behavioral management strategies, and ways to mitigate caregiver burden.
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Affiliation(s)
- Victor A Del Bene
- Department of Neurology, Division of Neuropsychology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA; The Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA
| | - Adam Gerstenecker
- Department of Neurology, Division of Neuropsychology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA; The Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA
| | - Ronald M Lazar
- Department of Neurology, Division of Neuropsychology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA; The Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA; Department of Neurobiology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL 35294, USA.
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17
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Wagle J, Selbæk G, Benth JŠ, Gjøra L, Rønqvist TK, Bekkhus-Wetterberg P, Persson K, Engedal K. The CERAD Word List Memory Test: Normative Data Based on a Norwegian Population-Based Sample of Healthy Older Adults 70 Years and Above. The HUNT Study. J Alzheimers Dis 2023; 91:321-343. [PMID: 36404547 DOI: 10.3233/jad-220672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND The CERAD Word List Memory Test (WLMT) is widely used in the assessment of older adults with suspected dementia. Although normative data of the WLMT exist in many different regions of the world, normative data based on large population-based cohorts from the Scandinavian countries are lacking. OBJECTIVE To develop normative data for the WLMT based on a large population-based Norwegian sample of healthy older adults aged 70 years and above, stratified by age, gender, and education. METHODS A total of 6,356 older adults from two population-based studies in Norway, HUNT4 70 + and HUNT4 Trondheim 70+, were administered the WLMT. Only persons with normal cognitive function were included. We excluded persons with a diagnosis of mild cognitive impairment (MCI) and dementia, and persons with a history of stroke and/or depression. This resulted in 3,951 persons aged between 70 and 90 years, of whom 56.2% were females. Regression-based normative data were developed for this sample. RESULTS Age, gender, and education were significant predictors of performance on the WLMT list-learning subtests and the delayed recall subtest, i.e., participants of younger age, female sex, and higher education level attained higher scores compared to participants of older age, male sex, and lower level of education. CONCLUSION Regression-based normative data from the WMLT, stratified by age, gender, and education from a large population-based Norwegian sample of cognitively healthy older adults aged 70 to 90 years are presented. An online norm calculator is available to facilitate scoring of the subtests (in percentiles and z-scores).
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Affiliation(s)
- Jørgen Wagle
- The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway
| | - Geir Selbæk
- The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway.,Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Jūratė Šaltytė Benth
- Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway.,Health Services Research Unit, Akershus University Hospital, Lørenskog, Norway
| | - Linda Gjøra
- The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway.,Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Psychiatry, Levanger Hospital, Nord-Trøndelag Hospital Trust, Levanger, Norway
| | - Thale Kinne Rønqvist
- The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway
| | | | - Karin Persson
- The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway.,Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway
| | - Knut Engedal
- The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway.,Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway
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18
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Amofa-Ho PA, Stickel AM, Chen R, Kobayashi LC, Glymour MM, Eng CW. The Mediating Roles of Neurobiomarkers in the Relationship Between Education and Late-Life Cognition. J Alzheimers Dis 2023; 95:1405-1416. [PMID: 37694365 PMCID: PMC10578223 DOI: 10.3233/jad-230244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND The mediating roles of neuropathologies and neurovascular damage in the relationship between early-life education and later-life cognitive function are unknown. OBJECTIVE To examine whether Alzheimer's and neurovascular biomarkers mediate the relationships between education and cognitive functions. METHODS Data were from 537 adults aged 55-94 in the Alzheimer's Disease Neuroimaging Initiative 3. We tested whether the relationships between education (continuous, years) and cognitive function (memory, executive functioning, and language composites) were mediated by neuroimaging biomarkers (hippocampal volumes, cortical gray matter volumes, meta-temporal tau PET standard uptake value ratio, and white matter hyperintensity volumes). Models were adjusted for age, race, sex/gender, cardiovascular history, body mass index, depression, and Apolipoprotein E-ɛ4 status. RESULTS Hippocampal volumes and white matter hyperintensities partially mediated the relationships between education and cognitive function across all domains (6.43% to 15.72% mediated). The direct effects of education on each cognitive domain were strong and statistically significant. CONCLUSIONS Commonly measured neurobiomarkers only partially mediate the relationships between education and multi-domain cognitive function.
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Affiliation(s)
- Priscilla A. Amofa-Ho
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
| | - Ariana M. Stickel
- Department of Psychology, San Diego State University, San Diego, CA, USA
| | - Ruijia Chen
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
| | - Lindsay C. Kobayashi
- Center for Social Epidemiology and Population Health, Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - M. Maria Glymour
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
| | - Chloe W. Eng
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
- Department of Epidemiology, Stanford University, Palo Alto, CA, USA
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19
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Hamilton RH, Goins RT. Improving Our Understanding of Cognitive Aging in American Indian Peoples. Neurology 2022; 99:1075-1076. [PMID: 36288999 DOI: 10.1212/wnl.0000000000201539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 09/23/2022] [Indexed: 11/15/2022] Open
Affiliation(s)
- Roy H Hamilton
- From the Department of Neurology (R.H.), University of Pennsylvania, Philadelphia; and College of Health and Human Sciences (R.T.G.), Western Carolina University, Cullowhee, NC.
| | - R Turner Goins
- From the Department of Neurology (R.H.), University of Pennsylvania, Philadelphia; and College of Health and Human Sciences (R.T.G.), Western Carolina University, Cullowhee, NC
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20
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Paul RH, Cho K, Belden A, Carrico AW, Martin E, Bolzenius J, Luckett P, Cooley SA, Mannarino J, Gilman JM, Miano M, Ances BM. Cognitive Phenotypes of HIV Defined Using a Novel Data-driven Approach. J Neuroimmune Pharmacol 2022; 17:515-525. [PMID: 34981318 PMCID: PMC10364465 DOI: 10.1007/s11481-021-10045-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 12/13/2021] [Indexed: 01/13/2023]
Abstract
The current study applied data-driven methods to identify and explain novel cognitive phenotypes of HIV. Methods: 388 people with HIV (PWH) with an average age of 46 (15.8) and median plasma CD4+ T-cell count of 555 copies/mL (79% virally suppressed) underwent cognitive testing and 3T neuroimaging. Demographics, HIV disease variables, and health comorbidities were recorded within three months of cognitive testing/neuroimaging. Hierarchical clustering was employed to identify cognitive phenotypes followed by ensemble machine learning to delineate the features that determined membership in the cognitive phenotypes. Hierarchical clustering identified five cognitive phenotypes. Cluster 1 (n=97) was comprised of individuals with normative performance on all cognitive tests. The remaining clusters were defined by impairment on action fluency (Cluster 2; n=46); verbal learning/memory (Cluster 3; n=73); action fluency and verbal learning/memory (Cluster 4; n=56); and action fluency, verbal learning/memory, and tests of executive function (Cluster 5; n=114). HIV detectability was most common in Cluster 5. Machine learning revealed that polysubstance use, race, educational attainment, and volumes of the precuneus, cingulate, nucleus accumbens, and thalamus differentiated membership in the normal vs. impaired clusters. The determinants of persistent cognitive impairment among PWH receiving suppressive treatment are multifactorial nature. Viral replication after ART plays a role in the causal pathway, but psychosocial factors (race inequities, substance use) merit increased attention as critical determinants of cognitive impairment in the context of ART. Results underscore the need for comprehensive person-centered interventions that go beyond adherence to patient care to achieve optimal cognitive health among PWH.
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Affiliation(s)
- Robert H Paul
- Department of Psychological Sciences, University of Missouri Saint Louis, Missouri, Saint Louis, US. .,Missouri Institute of Mental Health, University of Missouri Saint Louis, Missouri, Saint Louis, US.
| | - Kyu Cho
- Missouri Institute of Mental Health, University of Missouri Saint Louis, Missouri, Saint Louis, US
| | - Andrew Belden
- Missouri Institute of Mental Health, University of Missouri Saint Louis, Missouri, Saint Louis, US
| | - Adam W Carrico
- Department of Public Health, University of Miami School of Medicine, Coral Gables, Florida, US
| | - Eileen Martin
- Department of Psychiatry, Rush University School of Medicine, Chicago, Illinois, US
| | - Jacob Bolzenius
- Missouri Institute of Mental Health, University of Missouri Saint Louis, Missouri, Saint Louis, US
| | - Patrick Luckett
- Department of Neurology, Washington University, Saint Louis, Missouri, US
| | - Sarah A Cooley
- Department of Neurology, Washington University, Saint Louis, Missouri, US
| | - Julie Mannarino
- Missouri Institute of Mental Health, University of Missouri Saint Louis, Missouri, Saint Louis, US
| | - Jodi M Gilman
- Center for Addiction Medicine, Harvard Medical School/Massachusetts General Hospital, Boston, Massachusetts, US
| | - Mariah Miano
- Department of Communication Sciences and Disorders, Northern Arizona University, Flagstaff, Arizona, US
| | - Beau M Ances
- Department of Neurology, Washington University, Saint Louis, Missouri, US
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21
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John SE, Evans SA, Kim B, Ozgul P, Loring DW, Parker M, Lah JJ, Levey AI, Goldstein FC. Examination of the reliability and feasibility of two smartphone applications to assess executive functioning in racially diverse older adults. NEUROPSYCHOLOGY, DEVELOPMENT, AND COGNITION. SECTION B, AGING, NEUROPSYCHOLOGY AND COGNITION 2022; 29:1068-1086. [PMID: 34382482 PMCID: PMC8837703 DOI: 10.1080/13825585.2021.1962790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 07/27/2021] [Indexed: 10/20/2022]
Abstract
Inclusion of Black participants in clinical research is a national priority. Mobile applications and remote data collection may increase study access for diverse populations. This study examined the reliability and feasibility of two mobile smartphone application-based cognitive measures in a diverse middle aged and older adult sample. Black (n = 44; Mage = 59.93) and non-Hispanic white (NHW; n = 50; Mage = 61.06) participants completed traditional paper-based neuropsychological testing and two app-based measures, Arrows and Number Match. Intraclass correlations demonstrated poor to moderate reliability (range: .417-.569) between performance on the app-based versions and performance on the traditional versions. Performance score differences by racial group were not statistically significant. Both Black and NHW participants rated the app-based measures as feasible and acceptable, though Black participants endorsed a stronger likelihood of future use. These findings add to the growing literature on remote cognitive testing .
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Affiliation(s)
- Samantha E. John
- Department of Brain Health, School of Integrated Health Sciences, UNLV, Las Vegas, NV, USA
| | - Sarah A. Evans
- Department of Psychology, Marquette University, Milwaukee, WI, USA
| | - Bona Kim
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
| | - Petek Ozgul
- Emory Goizueta Alzheimer’s Disease Research Center, Atlanta, GA, USA
| | - David W. Loring
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
| | - Monica Parker
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
| | - James J. Lah
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
- Emory Goizueta Alzheimer’s Disease Research Center, Atlanta, GA, USA
| | - Allan I. Levey
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
- Emory Goizueta Alzheimer’s Disease Research Center, Atlanta, GA, USA
| | - Felicia C. Goldstein
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
- Emory Goizueta Alzheimer’s Disease Research Center, Atlanta, GA, USA
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22
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Cundiff JM, Lin SSH, Faulk RD, McDonough IM. Educational quality may be a closer correlate of cardiometabolic health than educational attainment. Sci Rep 2022; 12:18105. [PMID: 36302824 PMCID: PMC9613691 DOI: 10.1038/s41598-022-22666-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/18/2022] [Indexed: 12/30/2022] Open
Abstract
Educational quality may be a closer correlate of physical health than more commonly used measures of educational attainment (e.g., years in school). We examined whether a widely-used performance-based measure of educational quality is more closely associated with cardiometabolic health than educational attainment (highest level of education completed), and whether perceived control (smaller sample only), executive functioning (both samples), and health literacy (smaller sample only) link educational quality to cardiometabolic health. In two samples (N = 98 and N = 586) collected from different regions of the US, educational quality was associated with cardiometabolic health above and beyond educational attainment, other demographic factors (age, ethnoracial category, sex), and fluid intelligence. Counter to expectations, neither perceived control, executive function, nor health literacy significantly mediated the association between educational quality and cardiometabolic health. Findings add to the growing literature suggesting that current operationalizations of the construct of education likely underestimate the association between education and multiple forms of health. To the extent that educational programs may have been overlooked based on the apparent size of associations with outcomes, such actions may have been premature.
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Affiliation(s)
- Jenny M. Cundiff
- grid.411015.00000 0001 0727 7545University of Alabama, Tuscaloosa, AL USA
| | - Shayne S.-H. Lin
- grid.411015.00000 0001 0727 7545University of Alabama, Tuscaloosa, AL USA
| | - Robert D. Faulk
- grid.411015.00000 0001 0727 7545University of Alabama, Tuscaloosa, AL USA
| | - Ian M. McDonough
- grid.411015.00000 0001 0727 7545University of Alabama, Tuscaloosa, AL USA
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Hackett K, Giovannetti T. Capturing Cognitive Aging in Vivo: Application of a Neuropsychological Framework for Emerging Digital Tools. JMIR Aging 2022; 5:e38130. [PMID: 36069747 PMCID: PMC9494215 DOI: 10.2196/38130] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 07/19/2022] [Accepted: 07/31/2022] [Indexed: 11/13/2022] Open
Abstract
As the global burden of dementia continues to plague our healthcare systems, efficient, objective, and sensitive tools to detect neurodegenerative disease and capture meaningful changes in everyday cognition are increasingly needed. Emerging digital tools present a promising option to address many drawbacks of current approaches, with contexts of use that include early detection, risk stratification, prognosis, and outcome measurement. However, conceptual models to guide hypotheses and interpretation of results from digital tools are lacking and are needed to sort and organize the large amount of continuous data from a variety of sensors. In this viewpoint, we propose a neuropsychological framework for use alongside a key emerging approach-digital phenotyping. The Variability in Everyday Behavior (VIBE) model is rooted in established trends from the neuropsychology, neurology, rehabilitation psychology, cognitive neuroscience, and computer science literature and links patterns of intraindividual variability, cognitive abilities, and everyday functioning across clinical stages from healthy to dementia. Based on the VIBE model, we present testable hypotheses to guide the design and interpretation of digital phenotyping studies that capture everyday cognition in vivo. We conclude with methodological considerations and future directions regarding the application of the digital phenotyping approach to improve the efficiency, accessibility, accuracy, and ecological validity of cognitive assessment in older adults.
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Affiliation(s)
- Katherine Hackett
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA, United States
| | - Tania Giovannetti
- Department of Psychology and Neuroscience, Temple University, Philadelphia, PA, United States
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Kamalyan L, Guareña LA, Díaz-Santos M, Suarez P, Cherner M, García Alcorn MY, Umlauf A, Franklin DR, Mindt MR, Fortuny LAI, Heaton RK, Marquine MJ. Influence of Educational Background, Childhood Socioeconomic Environment, and Language Use on Cognition among Spanish-Speaking Latinos Living Near the US-Mexico Border. J Int Neuropsychol Soc 2022; 28:876-890. [PMID: 34486514 PMCID: PMC8898321 DOI: 10.1017/s1355617721001028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES We investigated the impact of culturally relevant social, educational, and language factors on cognitive test performance among Spanish speakers living near the US-Mexico border. METHODS Participants included 254 healthy native Spanish speakers from the Neuropsychological Norms for the US-Mexico Border Region in Spanish (NP-NUMBRS) project (Age: M = 37.3, SD = 10.4; Education: M = 10.7, SD = 4.3; 59% Female). A comprehensive neuropsychological battery was administered in Spanish. Individual test scaled scores and T-scores (based on region-specific norms adjusted for age, education, and sex) were averaged to create Global Mean Scaled and T-scores. Measures of culturally relevant factors included a self-reported indicator of educational quality/access (proportion of education in Spanish-speaking country, quality of school/classroom setting, stopped attending school to work), childhood socioeconomic environment (parental education, proportion of time living in Spanish-speaking country, childhood socioeconomic and health status, access to basic resources, work as a child), and Spanish/English language use and fluency. RESULTS Several culturally relevant variables were significantly associated with unadjusted Global Scaled Scores in univariable analyses. When using demographically adjusted T-scores, fewer culturally relevant characteristics were significant. In multivariable analyses, being bilingual (p = .04) and working as a child for one's own benefit compared to not working as a child (p = .006) were significantly associated with higher Global Mean T-score, accounting for 9% of variance. CONCLUSIONS Demographically adjusted normative data provide a useful tool for the identification of brain dysfunction, as these account for much of the variance of sociocultural factors on cognitive test performance. Yet, certain culturally relevant variables still contributed to cognitive test performance above and beyond basic demographics, warranting further investigation.
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Affiliation(s)
- Lily Kamalyan
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California, San Diego
- San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology
| | - Lesley A. Guareña
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California, San Diego
- Department of Medicine, Division of Geriatrics and Gerontology, University of California, San Diego
| | - Mirella Díaz-Santos
- Department of Psychiatry and Biobehavioral Sciences, Hispanic Neuropsychiatric Center of Excellence, University of California, Los Angeles
| | - Paola Suarez
- Department of Psychiatry and Biobehavioral Sciences, Hispanic Neuropsychiatric Center of Excellence, University of California, Los Angeles
| | - Mariana Cherner
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California, San Diego
| | | | - Anya Umlauf
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California, San Diego
| | - Donald R. Franklin
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California, San Diego
| | - Monica Rivera Mindt
- Department of Psychology & Latino American and Latino Studies Institute, Fordham University
| | | | - Robert K. Heaton
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California, San Diego
| | - María J. Marquine
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California, San Diego
- Department of Medicine, Division of Geriatrics and Gerontology, University of California, San Diego
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Carthery-Goulart MT, de Oliveira R, de Almeida IJ, Campanha A, da Silva Souza D, Zana Y, Caramelli P, Machado TH. Sentence Comprehension in Primary Progressive Aphasia: A Study of the Application of the Brazilian Version of the Test for the Reception of Grammar (TROG2-Br). Front Neurol 2022; 13:815227. [PMID: 35651345 PMCID: PMC9149594 DOI: 10.3389/fneur.2022.815227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 03/22/2022] [Indexed: 11/13/2022] Open
Abstract
Sentence-comprehension deficits have been described in patients with primary progressive aphasia (PPA). However, most instruments to address this domain in more detail and in a clinical context have not been adapted and translated into several languages, posing limitations to clinical practice and cross-language research. Objectives The study aimed to (1) test the applicability of the Brazilian version of the Test for Reception of Grammar (TROG2-Br) to detect morphosyntactic deficits in patients with PPA; (2) investigate the association between performance in the test and sociodemographic and clinical variables (age, years of formal education, and disease duration); (3) characterize the performance of individuals presenting with the three more common variants of PPA (non-fluent, semantic, and logopenic) and mixed PPA (PPA-Mx) and analyze whether TROG-2 may assist in the distinction of these clinical profiles. Methods A total of 74 cognitively healthy participants and 34 individuals diagnosed with PPA were assessed with TROG2-Br. Overall scores (correct items, passed blocks), types, and categories of errors were analyzed. Results In controls, block scores were significantly correlated with years of formal education (Spearman's r = 0.33, p = 004) but not with age. In PPA, age, education, and disease duration were not significantly associated with performance in the test. Controls presented a significantly higher performance on TROG2-Br compared to PPA individuals and their errors pattern pointed to mild general cognitive processing difficulties (attention, working memory). PPA error types pointed to processing and morphosyntactic deficits in nonfluent or agrammatic PPA, (PPA-NF/A), logopenic PPA (PPA-L), and PPA-Mx. The semantic PPA (PPA-S) subgroup was qualitatively more similar to controls (processing difficulties and lower percentage of morphosyntactic errors). TROG2-Br presented good internal consistency and concurrent validity. Discussion Our results corroborate findings with TROG-2 in other populations. The performance of typical older adults with heterogeneous levels of education is discussed along with recommendations for clinical use of the test and future directions of research.
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Affiliation(s)
- Maria Teresa Carthery-Goulart
- Federal University of ABC (UFABC), Mathematics, Computing and Cognition Center (CMCC), São Bernardo do Campo, Brazil.,INCT-ECCE (Instituto Nacional de Ciência e Tecnologia sobre Comportamento, Cognição e Ensino), São Carlos, Brazil.,Cognitive and Behavioral Neurology Research Group of the Department of Neurology of the University of São Paulo (USP), School of Medicine, São Paulo, Brazil
| | - Rosimeire de Oliveira
- Federal University of ABC (UFABC), Mathematics, Computing and Cognition Center (CMCC), São Bernardo do Campo, Brazil
| | - Isabel Junqueira de Almeida
- Cognitive and Behavioral Neurology Research Group of the Department of Neurology of the University of São Paulo (USP), School of Medicine, São Paulo, Brazil
| | - Aline Campanha
- Cognitive and Behavioral Neurology Research Group, School of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Dayse da Silva Souza
- Federal University of ABC (UFABC), Mathematics, Computing and Cognition Center (CMCC), São Bernardo do Campo, Brazil
| | - Yossi Zana
- Federal University of ABC (UFABC), Mathematics, Computing and Cognition Center (CMCC), São Bernardo do Campo, Brazil
| | - Paulo Caramelli
- Cognitive and Behavioral Neurology Research Group, School of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Thais Helena Machado
- Cognitive and Behavioral Neurology Research Group, School of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
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Abstract
PURPOSE OF REVIEW This article discusses the application of neuropsychological evaluation to the workup of individuals with age-related cognitive impairment and suspected dementia. Referral questions, principles of evaluation, and common instruments to detect abnormalities in cognition and behavior in this population are reviewed. The integration of neuropsychological test findings with other clinical and biomarker information enhances early detection, differential diagnosis, and care planning. RECENT FINDINGS Life expectancy is increasing in the United States, and, accordingly, the prevalence and incidence of dementia associated with age-related neurodegenerative brain disease are rising. Age is the greatest risk factor for the dementia associated with Alzheimer disease, the most common neurodegenerative cause of dementia in people over 65 years of age; other etiologies, such as the class of frontotemporal lobar degenerations, are increasingly recognized in individuals both younger and older than 65 years of age. The clinical dementia diagnosis, unfortunately, is imperfectly related to disease etiology; however, probabilistic relationships can aid in diagnosis. Further, mounting evidence from postmortem brain autopsies points to multiple etiologies. The case examples in this article illustrate how the neuropsychological evaluation increases diagnostic accuracy and, most important, identifies salient cognitive and behavioral symptoms to target for nonpharmacologic intervention and caregiver education and support. Sharing the diagnosis with affected individuals is also discussed with reference to prognosis and severity of illness. SUMMARY The clinical neuropsychological examination facilitates early detection of dementia, characterizes the level of severity, defines salient clinical features, aids in differential diagnosis, and points to a pathway for care planning and disease education.
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Vila-Castelar C, Fox-Fuller JT, Guzmán-Vélez E, Schoemaker D, Quiroz YT. A cultural approach to dementia - insights from US Latino and other minoritized groups. Nat Rev Neurol 2022; 18:307-314. [PMID: 35260817 PMCID: PMC9113534 DOI: 10.1038/s41582-022-00630-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2022] [Indexed: 12/14/2022]
Abstract
Alzheimer disease and related dementias present considerable challenges to health-care and medical systems worldwide. In the USA, older Black and Latino individuals are more likely than older white individuals to have Alzheimer disease and related dementias. In this Perspective, we leverage our experience and expertise with older US Latino groups to review and discuss the need to integrate cultural factors into dementia research and care. We examine the importance of considering the effects of cultural factors on clinical presentation and diagnosis, dementia risk, clinical research and recruitment, and caregiving practices, with a focus on minoritized groups in the USA. We highlight critical gaps in the literature to stimulate future research aimed at improving the prevention and early detection of Alzheimer disease and related dementias and developing novel treatments and interventions across ethnoracially diverse populations. In addition, we briefly discuss some of our own initiatives to promote research and clinical care among Latino populations living in the USA.
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Affiliation(s)
- Clara Vila-Castelar
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Joshua T Fox-Fuller
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Department of Psychological and Brain Sciences, Boston University, Boston, MA, USA
| | - Edmarie Guzmán-Vélez
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Dorothee Schoemaker
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Yakeel T Quiroz
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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Rodriguez M, Mendoza L, Rodriguez I, Rosselli M, Loewenstein D, Burke S, Orozco A, Duara R. Cultural factors related to neuropsychological performance and brain atrophy among Hispanic older adults with amnestic Mild Cognitive Impairment (aMCI): A pilot study. APPLIED NEUROPSYCHOLOGY. ADULT 2022; 29:364-372. [PMID: 32397837 PMCID: PMC10021027 DOI: 10.1080/23279095.2020.1761368] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVES This study examined the association of cultural factors and literacy to neuropsychological performance and measures of regional brain atrophy among Hispanic elders diagnosed with amnestic Mild Cognitive Impairment (aMCI). METHOD Acculturation and literacy levels were measured among 45 subjects tested in Spanish; their primary language. Scores for measures of memory, executive functioning, and verbal fluency, as well as volumetric analysis of MRI scans of left hemisphere structures commonly affected by Alzheimer's disease (AD) were examined. Linear regression models were employed to examine the association of acculturation and literacy to neuropsychological performance and MRI measures. RESULTS After controlling for age, higher literacy levels were associated with better performance on phonemic verbal fluency (r = 0.300, p < .05), while higher levels of acculturation to the U.S. was associated with poorer performance on category verbal fluency (r = 0.300, p < .05). There was a significant inverse relationship after controlling for age between literacy and the left entorhinal cortex (r = -0.455, p < .05), left precuneus (r = -0.457, p < .05), and left posterior cingulate (r = -0.415, p < .05). CONCLUSIONS Results of the current pilot study indicate that high acculturation to the U.S. among aMCI immigrants from Latin-American countries may hinder performance on verbal learning measures when they are administered in one's primary language. Moreover, in this cohort, a higher literacy level, which is indicative of greater cognitive reserve, was associated with better performance in language measures, but with greater atrophy in brain regions susceptible to neurodegenerative disease. These preliminary findings should be further examined among larger cohorts and using more diverse measures, which capture other cultural constructs.
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Affiliation(s)
- Miriam Rodriguez
- Department of Psychology Doctoral Program, Albizu University, Miami, FL, USA
| | - Lisandra Mendoza
- Department of Psychology Doctoral Program, Albizu University, Miami, FL, USA
| | - Ivan Rodriguez
- Department of Psychology Doctoral Program, Albizu University, Miami, FL, USA
| | - Mónica Rosselli
- Department of Psychology, Charles E. Schmidt College of Science, Florida Atlantic University, Davie, FL, USA
| | - David Loewenstein
- Department of Miller School of Medicine, University of Miami and Center on Aging, Miami, FL, USA
| | - Shanna Burke
- Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
| | - Amanda Orozco
- Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
| | - Ranjan Duara
- Mt. Sinai Medical Center, Wien Center for Alzheimer’s Disease and Memory Disorders, Miami Beach, FL, USA
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Mendoza L, Garcia P, Duara R, Rosselli M, Loewenstein D, Greig-Custo MT, Barker W, Dahlin P, Rodriguez MJ. The effect of acculturation on cognitive performance among older Hispanics in the United States. APPLIED NEUROPSYCHOLOGY. ADULT 2022; 29:163-171. [PMID: 32116033 DOI: 10.1080/23279095.2020.1725888] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The effect of acculturation on cognition was examined among 142 older Hispanics: cognitively normal [CN; n = 70], Mild Cognitive Impairment, amnestic [aMCI; n = 27], and Dementia [D; n = 45]. Acculturation levels (high vs. low) were determined using the Short Acculturation Scale for Hispanics (SASH). ANCOVAs used a wide variety of neuropsychological tests as independent variables controlling for age and education. Among CN subjects, the highly acculturated group performed better on Logical Memory delayed recall (LM-II) [F(1, 56) = 9.26, p < .001, η p 2 = 0.14], Digit Span Forward [F(1, 56) = 4.37, p < .05, η p 2 = 0.07], Trail Making Test A [F(1, 56) = 7.74, p < .05, η p 2 = 0.12], and Trail Making Test B [F(1, 56) = 4.66, p = .03, η p 2 = 0.08], indicating that high acculturation was associated with a better performance on tests of episodic memory, auditory attention, working memory, cognitive flexibility, and processing speed among CN Hispanics. ANCOVA analyses were not significant among the other groups. In the absence of acculturation scales in clinical practice, caution should be exerted when interpreting neurocognitive results.
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Affiliation(s)
- Lisandra Mendoza
- Albizu University-Miami Campus, Psychology Doctoral Program, Miami, FL, USA
| | - Patricia Garcia
- Jackson Memorial Hospital, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Ranjan Duara
- Mount Sinai Medical Center, Wien Center for Alzheimer's Disease and Memory Disorders, Miami Beach, FL, USA
| | - Mónica Rosselli
- Department of Psychology, Charles E. Schmidt College of Medicine, Florida Atlantic University, Davie, FL, USA
| | - David Loewenstein
- Mount Sinai Medical Center, Wien Center for Alzheimer's Disease and Memory Disorders, Miami Beach, FL, USA
- University of Miami and Center on Aging, Miller School of Medicine, Miami, FL, USA
| | - Maria T Greig-Custo
- Mount Sinai Medical Center, Wien Center for Alzheimer's Disease and Memory Disorders, Miami Beach, FL, USA
| | - Warren Barker
- Mount Sinai Medical Center, Wien Center for Alzheimer's Disease and Memory Disorders, Miami Beach, FL, USA
| | - Pamela Dahlin
- Albizu University-Miami Campus, Psychology Doctoral Program, Miami, FL, USA
| | - Miriam J Rodriguez
- Albizu University-Miami Campus, Psychology Doctoral Program, Miami, FL, USA
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Thompson JL, Beltran-Najera I, Johnson B, Morales Y, Woods SP. Evidence for neuropsychological health disparities in Black Americans with HIV disease. Clin Neuropsychol 2022; 36:388-413. [PMID: 35166174 PMCID: PMC8868032 DOI: 10.1080/13854046.2021.1947387] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Black Americans are at high risk for HIV disease and associated morbidity. The impact and clinical correlates of HIV-associated neurocognitive impairment among Black Americans is not fully understood. The current study uses a full factorial design to examine the independent and combined effects of race and HIV disease on neurocognitive functioning, including its associations with everyday functioning and clinical disease markers in Black and White persons with HIV (PWH). METHOD Participants included 40 Black PWH, 83 White PWH, 28 Black HIV- and 64 White HIV- individuals. Neurocognition was measured by raw sample-based z-scores from a clinical battery. Everyday functioning was assessed using self- and clinician-rated measures of cognitive symptoms and activities of daily living. HIV-associated neurocognitive disorders were also classified using demographically adjusted normative standards and the Frascati criteria. RESULTS We observed a significant three-way interaction between HIV, race, and domain on raw neurocognitive z-scores. This omnibus effect was driven by medium and large effect size decrements in processing speed and semantic memory, respectively, in Black PWH compared to other study groups. Black PWH also demonstrated higher frequencies of HIV-associated neurocognitive disorders as compared to White PWH. Unexpectedly, global neurocognitive performance was negatively related to everyday functioning impairments for White PWH, but not for Black PWH. CONCLUSIONS Systemic disadvantages for Black Americans may combine with HIV disease to compound some neurocognitive impairments in this under-served population. Prospective studies are needed to identify better ways to prevent, measure, diagnose, and manage HIV-associated neurocognitive disorders among Black Americans.
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Affiliation(s)
| | | | | | | | - Steven Paul Woods
- Corresponding author: Steven Paul Woods, Psy.D. . Address: 126 Heyne Building, Suite 239D, Houston, TX 77004-5022. Phone: 713-743-6415
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D Hood E, B Boone K, S Miora D, E Cottingham M, L Victor T, A Zeigler E, A Zeller M, J Wright M. Are there differences in performance validity test scores between African American and White American neuropsychology clinic patients? J Clin Exp Neuropsychol 2022; 44:31-41. [PMID: 35670549 DOI: 10.1080/13803395.2022.2069230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The purpose of the present study was to compare performance on a wide range of PVTs in a neuropsychology clinic sample of African Americans and White Americans to determine if there are differences in mean scores or cut-off failure rates between the two groups, and to identify factors that may account for false positive PVT results in African American patients. METHOD African American and White American non-compensation-seeking neuropsychology clinic patients were compared on a wide range of standalone and embedded PVTs: Dot Counting Test, b Test, Warrington Recognition Memory Test, Rey 15-item plus recognition, Rey Word Recognition Test, Digit Span (ACSS, RDS, 3-digit time, 4-digit time), WAIS-III Picture Completion (Most discrepant index), WAIS-III Digit Symbol/Coding (recognition equation), Rey Auditory Verbal Learning Test, Rey Complex figure, WMS-III Logical Memory, Comalli Stroop Test, Trails A, and Wisconsin Card Sorting Test. RESULTS When groups were equated for age and education, African Americans obtained mean performances significantly worse than White Americans on only four of 25 PVT scores across the 14 different measures (Stroop Word Reading and Color Naming, Trails A, Digit Span 3-digit time); however, FSIQ was also significantly higher in White American patients. When subjects with borderline IQ (FSIQ = 70 to 79) were excluded (resulting in 74 White Americans and 25 African Americans), groups no longer differed in IQ and only continued to differ on a single PVT cutoff (Trails A). Further, specificity rates in African Americans were comparable to those of White Americans with the exception of the b Test, the Dot Counting Test, and Stroop B. CONCLUSIONS PVT performance generally does not differ as a function of Black versus White race once the impact of intellectual level is controlled, and most PVT cutoffs appear appropriate for use in African Americans of low average IQ or higher.
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Affiliation(s)
- Elexsia D Hood
- California School of Forensic Studies, Alliant International University, Los Angeles, USA
| | - Kyle B Boone
- California School of Forensic Studies, Alliant International University, Los Angeles, USA.,Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, USA
| | - Deborah S Miora
- California School of Forensic Studies, Alliant International University, Los Angeles, USA
| | - Maria E Cottingham
- Mental Health Care Line, Veterans Administration Tennessee Valley Healthcare System, Nashville, USA
| | - Tara L Victor
- Department of Psychology, California State University, Dominguez Hills, Carson, USA
| | | | - Michelle A Zeller
- West Los Angeles Veterans Administration Medical Center, Los Angeles, USA
| | - Matthew J Wright
- Department of Psychiatry, Harbor-UCLA Medical Center, Torrance, USA
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Rosen AS, King LC, Kinney DI, Nitch SR, Glassmire DM. Are TOPF and WRAT WR Interchangeable Measures among Psychiatric Inpatients? Arch Clin Neuropsychol 2022; 37:641-653. [PMID: 35034118 DOI: 10.1093/arclin/acab098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 11/16/2021] [Accepted: 12/15/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To examine whether Test of Premorbid Functioning (TOPF) and Wide Range Achievement Test-Word Reading subtest (WRAT WR) are interchangeable measures, and the relationship between these measures and intelligence, among patients with schizophrenia. METHOD In this archival study, the authors examined neuropsychology referrals of an inpatient forensic state hospital. Patients with a schizophrenia spectrum disorder (SSD) who received the Wechsler Adult Intelligence Scale-Fourth Edition or the Wechsler Abbreviated Scale of Intelligence-Second Edition and either TOPF or WRAT WR were considered for inclusion. The final sample consisted of 119 individuals (73.1% male). RESULTS Although there was a linear relationship between most TOPF variables and WRAT WR, their concordance was weak (concordance correlation coefficients [CCC] < 0.90). Poor concordance was also observed between current FSIQ and all standard scores (SS) derived from word reading measures. FSIQ-word reading measure discrepancy scores differed significantly from a hypothesized mean of 0 (mean discrepancy range = -7.42 to -16.60). Discrepancies greater than one standard deviation (>1 SD) were highest among demographics-based SS (i.e. TOPF Predicted and Simple without TOPF). Performance-based SS, particularly TOPF Actual and WRAT4 WR, had the fewest discrepancy scores >1 SD fromFSIQ. CONCLUSIONS TOPF and WRAT WR should not be used interchangeably among institutionalized patients with SSDs. TOPF and WRAT WR were discrepant from FSIQ, with demographic variables producing higher SS relative to performance-based variables. Future research is needed to determine which of these measures more accurately estimates intelligence among inpatients withSSDs.
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Affiliation(s)
- Alexis S Rosen
- Department of Psychology, Department of State Hospitals-Patton, Patton, CA 92369, USA
| | - Loren C King
- Department of Psychology, Department of State Hospitals-Patton, Patton, CA 92369, USA
| | - Dominique I Kinney
- Department of Psychology, Department of State Hospitals-Patton, Patton, CA 92369, USA
| | - Stephen R Nitch
- Department of Psychology, Department of State Hospitals-Patton, Patton, CA 92369, USA
| | - David M Glassmire
- Department of Psychology, Department of State Hospitals-Patton, Patton, CA 92369, USA
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García-Herranz S, Díaz-Mardomingo MC, Suárez-Falcón JC, Rodríguez-Fernández R, Peraita H, Venero C. Normative Data for Verbal Fluency, Trail Making, and Rey-Osterrieth Complex Figure Tests on Monolingual Spanish-Speaking Older Adults. Arch Clin Neuropsychol 2022; 37:952-969. [PMID: 34984432 DOI: 10.1093/arclin/acab094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 11/21/2021] [Accepted: 11/28/2021] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE This study aimed to generate updated normative data for commonly used tests in neuropsychological assessment applied to older monolingual Spanish-speaking adults: Verbal fluency tests, the Trail Making Test (TMT), and the Rey-Osterrieth complex figure test (ROCF). METHOD To obtain normative data, 382 cognitively healthy 60- to 90-year-old Spanish monolingual participants from the Autonomous Community of Madrid (Spain) with 0-22 years education were assessed using an overlapping interval strategy that involved cell and midpoint techniques, and that assessed the influence of age, education, and sex. RESULTS Age and education were associated with the scores in the verbal fluency tests, TMT, and ROCF, whereas sex only significantly affected the TMT results. Age-adjusted scaled scores (SSA) based on percentile ranks were also converted into age-education scaled scores (SSAE) using a linear regression model. In addition, tables with the relevant adjustments for sex are provided for TMT-A and TMT-B. CONCLUSIONS Thus, this study provides updated, uniform normative data for widely used neuropsychological tests on older Spanish adults. The normative procedure followed helps to make consistent comparisons when using these neuropsychological tests, which will improve the interpretation of the data obtained when these tools are employed, reducing the risk of misdiagnosing cognitive impairment in older adults.
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Affiliation(s)
- Sara García-Herranz
- Department of Basic Psychology II, Universidad Nacional de Educación a Distancia, Madrid, Spain.,Instituto Mixto de Investigación-Escuela Nacional de Sanidad (IMIENS), Madrid, Spain
| | - M Carmen Díaz-Mardomingo
- Instituto Mixto de Investigación-Escuela Nacional de Sanidad (IMIENS), Madrid, Spain.,Department of Basic Psychology I, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - Juan Carlos Suárez-Falcón
- Department of Behavioral Sciences Methodology, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - Raquel Rodríguez-Fernández
- Instituto Mixto de Investigación-Escuela Nacional de Sanidad (IMIENS), Madrid, Spain.,Department of Behavioral Sciences Methodology, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - Herminia Peraita
- Department of Basic Psychology I, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - César Venero
- Instituto Mixto de Investigación-Escuela Nacional de Sanidad (IMIENS), Madrid, Spain.,Department of Psychobiology, Universidad Nacional de Educación a Distancia, Madrid, Spain
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Breton J, Stickel AM, Tarraf W, Gonzalez KA, Keamy AJ, Schneiderman N, Marquine MJ, Zlatar ZZ, Salmon DP, Lamar M, Daviglus ML, Lipton RB, Gallo LC, Goodman ZT, González HM. Normative data for the Brief Spanish-English Verbal Learning Test for representative and diverse Hispanics/Latinos: Results from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2021; 13:e12260. [PMID: 34934802 PMCID: PMC8650755 DOI: 10.1002/dad2.12260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 06/21/2021] [Accepted: 06/28/2021] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Episodic learning and memory performance are crucial components of cognitive assessment. To meet the needs of a diverse Hispanic/Latino population, we aimed to provide normative data on the Brief Spanish-English Verbal Learning Test (B-SEVLT). METHODS The target population for the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) included individuals 45+ years old from Central American, Cuban, Dominican, Mexican, Puerto Rican, and South American backgrounds. Average age was 56.5 years ± 9.92, 54.5% were female, and mean education was 11.0 years ± 5.6 (unweighted n = 9309). Participants were administered the B-SEVLT in their preferred language (Spanish or English). Hispanic/Latino background adjusted B-SEVLT scores and percentile cut-points were created using survey-adjusted regression models. RESULTS Higher educational attainment, younger age, and being female were associated with higher learning and memory performance. Hispanic/Latino background groups differed in B-SEVLT performance. DISCUSSION Representative learning and memory norms for Hispanic/Latinos of diverse backgrounds will improve cognitive assessment and accuracy of neurocognitive disorder diagnosis.
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Affiliation(s)
- Jordana Breton
- Department of PsychiatryUniversity of California San DiegoLa JollaCaliforniaUSA
| | - Ariana M. Stickel
- Department of Neurosciences and Shiley‐Marcos Alzheimer's Disease Research CenterUniversity of California San DiegoLa JollaCaliforniaUSA
| | - Wassim Tarraf
- Institute of Gerontology & Department of Healthcare SciencesWayne State UniversityDetroitMichiganUSA
| | - Kevin A. Gonzalez
- Department of Neurosciences and Shiley‐Marcos Alzheimer's Disease Research CenterUniversity of California San DiegoLa JollaCaliforniaUSA
| | - Alexandra J. Keamy
- Department of Neurosciences and Shiley‐Marcos Alzheimer's Disease Research CenterUniversity of California San DiegoLa JollaCaliforniaUSA
| | | | - María J. Marquine
- Department of PsychiatryUniversity of California San DiegoLa JollaCaliforniaUSA
- Department of MedicineUniversity of California San DiegoLa JollaCaliforniaUSA
| | - Zvinka Z. Zlatar
- Department of PsychiatryUniversity of California San DiegoLa JollaCaliforniaUSA
| | - David P. Salmon
- Department of Neurosciences and Shiley‐Marcos Alzheimer's Disease Research CenterUniversity of California San DiegoLa JollaCaliforniaUSA
| | - Melissa Lamar
- Institute for Minority Health ResearchUniversity of Illinois at ChicagoCollege of MedicineChicagoIllinoisUSA
- Rush Alzheimer's Disease CenterRush University Medical CenterChicagoIllinoisUSA
| | - Martha L. Daviglus
- Institute for Minority Health ResearchUniversity of Illinois at ChicagoCollege of MedicineChicagoIllinoisUSA
| | - Richard B. Lipton
- Departments of NeurologyEpidemiology & Population HealthAlbert Einstein College of MedicineNew YorkNew YorkUSA
| | - Linda C. Gallo
- Department of PsychologySan Diego State UniversitySan DiegoCaliforniaUSA
| | | | - Hector M. González
- Department of Neurosciences and Shiley‐Marcos Alzheimer's Disease Research CenterUniversity of California San DiegoLa JollaCaliforniaUSA
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Alzheimer disease in African American individuals: increased incidence or not enough data? Nat Rev Neurol 2021; 18:56-62. [PMID: 34873310 PMCID: PMC8647782 DOI: 10.1038/s41582-021-00589-3] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2021] [Indexed: 11/13/2022]
Abstract
Research on racial differences in Alzheimer disease (AD) dementia has increased in recent years. Older African American individuals bear a disproportionate burden of AD and cognitive impairment compared with non-Latino white individuals. Tremendous progress has been made over the past two decades in our understanding of the neurobiological substrates of AD. However, owing to well-documented challenges of study participant recruitment and a persistent lack of biological data in the African American population, knowledge of the drivers of these racial disparities has lagged behind. Therapeutic targets and effective interventions for AD are increasingly sought, but without a better understanding of the disease in African American individuals, any identified treatments and/or cures will evade this rapidly growing at-risk population. In this Perspective, I introduce three key obstacles to progress in understanding racial differences in AD: uncertainty about diagnostic criteria, disparate cross-sectional and longitudinal findings; and a dearth of neuropathological data. I also highlight evidence-informed strategies to move the field forward. In this Perspective, Barnes introduces three key obstacles to progress in our understanding of racial differences in Alzheimer disease and highlights evidence-informed strategies that can move the field forward.
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Ivanovic V, Seiler S, Tarraf W, Crivello E, Martinez O, Lipton RB, Isasi CR, Copello TG, Talavera GA, Gallo LC, Lamar M, Testai F, Schneiderman N, Gellman MD, Daviglus M, Gonzalez HM, DeCarli C, Lipton ML. Prevalence of incidental brain MRI findings of clinical relevance in a diverse Hispanic/Latino population. J Neuroimaging 2021; 31:1166-1175. [PMID: 34288226 PMCID: PMC10332335 DOI: 10.1111/jon.12910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 07/09/2021] [Accepted: 07/09/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE There is limited literature on the prevalence of incidental brain MRI findings in the Hispanic/Latino population, despite their increased prevalence of vascular disease and undertreatment of chronic conditions. The purpose of our study was to determine the prevalence of clinically relevant incidental findings on brain MRI examinations obtained as a part of the Study of Latinos-Investigation of NeuroCognitive Aging MRI (SOL-INCA-MRI) study. METHODS Brain MRI examinations were obtained on 1389 participants in the SOL-INCA-MRI study, a cross-sectional ancillary study of the Hispanic Community Health Study, Study of Latinos, which is a longitudinal, community-based study. Study design of SOL-INCA-MRI involves imaging cognitively normal and participants with mild cognitive impairment. Brain MRI findings were categorized as Level 1 (normal), Level 1.5 (findings of unclear medical significance), Level 2 (potential medical concern), or Level 3 (medically urgent). This article focuses on Level 2 and Level 3 findings. RESULTS The average age of the sample was 60.8 years (+/- 10.3 years), 66.1% were females. Level 2 and 3 findings were identified in 117 participants, (8.4%), of which 109 (7.8%) were recommended for medical follow-up (Level 2), and 8 (0.6%) were recommended for immediate medical attention (Level 3). Brain MRI findings consisted of chronic infarction in 33 (2.4%), vascular abnormality in 27 (1.9%), intracranial mass in 20 (1.4%), other intracranial findings in 28 (2.0%), and skull base/extracranial findings in 26 (1.9%) patients. CONCLUSION Incidental findings of clinical relevance were common among SOL-INCA-MRI participants, but rarely required urgent medical intervention.
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Affiliation(s)
- Vladimir Ivanovic
- Department of Radiology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Stephan Seiler
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Wassim Tarraf
- Wayne State University, Institute of Gerontology, Detroit, MI, USA
| | - Emily Crivello
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Oliver Martinez
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Richard B. Lipton
- Department of Neurology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Carmen R. Isasi
- Department of Neurology, Albert Einstein College of Medicine, Bronx, NY, USA
| | | | | | - Linda C. Gallo
- Department of Psychology, San Diego State University, San Diego, CA, USA
| | - Melissa Lamar
- Department of Psychiatry & Behavioral Sciences, Rush University Medical Center, Rush Alzheimer’s Disease Center, Chicago, IL, USA
| | - Fernando Testai
- Department of Neurology, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Marc D. Gellman
- Department of Psychology, University of Miami, Miami, FL, USA
| | - Martha Daviglus
- University of Illinois at Chicago, Institute for Minority Health Research, Chicago, IL, USA
| | - Hector M. Gonzalez
- Department of Neurosciences, Shiley-Marcos Alzheimer’s Disease Research Center, University of California San Diego, San Diego, CA, USA
| | - Charles DeCarli
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Michael L. Lipton
- Departments of Radiology, Psychiatry and Behavioral Sciences and The Dominick P Purpura Department of Neuroscience, Albert Einstein College of Medicine and Montefiore Health System, Bronx, NY, USA
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Whaley AL. Stereotype Threat and Neuropsychological Test Performance in the U.S. African American Population. Arch Clin Neuropsychol 2021; 36:1361-1366. [PMID: 33829241 DOI: 10.1093/arclin/acab020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 03/06/2021] [Accepted: 03/26/2021] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE This cross-sectional study tested stereotype threat theory using the Modified-Symbol Digit Modalities Test (M-SDMT), a neurocognitive test, with the African American subsample (N = 3570) of the National Survey of American Life. The primary hypothesis is that those classified as experiencing stereotype threat will achieve the lowest scores. METHOD African American respondents who perceived race as a barrier to life goals and scored above the median in endorsement of negative racial stereotypes were classified as experiencing stereotype threat. M-SDMT scores were regressed on threat group classification with adjustments for gender, age, income, and education. Nonparametric test of the effect sizes for threat group classification versus demographic variables was also conducted. RESULTS The stereotype threat group obtained statistically significantly lower M-SDMT scores than the no threat group. However, the stereotype threat effect became nonsignificant in regression analyses adjusted for demographic variables. The nonparametric test revealed a statistically significantly larger average effect size for demographic variables than threat group classification. CONCLUSION The relatively less influential role of stereotype threat than other biological and social factors limit its explanatory power for racial disparities in neuropsychological test performance among African Americans.
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Boyle R, Knight SP, De Looze C, Carey D, Scarlett S, Stern Y, Robertson IH, Kenny RA, Whelan R. Verbal intelligence is a more robust cross-sectional measure of cognitive reserve than level of education in healthy older adults. Alzheimers Res Ther 2021; 13:128. [PMID: 34253231 PMCID: PMC8276413 DOI: 10.1186/s13195-021-00870-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 06/28/2021] [Indexed: 01/02/2023]
Abstract
BACKGROUND Cognitive reserve is most commonly measured using socio-behavioural proxy variables. These variables are easy to collect, have a straightforward interpretation, and are widely associated with reduced risk of dementia and cognitive decline in epidemiological studies. However, the specific proxies vary across studies and have rarely been assessed in complete models of cognitive reserve (i.e. alongside both a measure of cognitive outcome and a measure of brain structure). Complete models can test independent associations between proxies and cognitive function in addition to the moderation effect of proxies on the brain-cognition relationship. Consequently, there is insufficient empirical evidence guiding the choice of proxy measures of cognitive reserve and poor comparability across studies. METHOD In a cross-sectional study, we assessed the validity of 5 common proxies (education, occupational complexity, verbal intelligence, leisure activities, and exercise) and all possible combinations of these proxies in 2 separate community-dwelling older adult cohorts: The Irish Longitudinal Study on Ageing (TILDA; N = 313, mean age = 68.9 years, range = 54-88) and the Cognitive Reserve/Reference Ability Neural Network Study (CR/RANN; N = 234, mean age = 64.49 years, range = 50-80). Fifteen models were created with 3 brain structure variables (grey matter volume, hippocampal volume, and mean cortical thickness) and 5 cognitive variables (verbal fluency, processing speed, executive function, episodic memory, and global cognition). RESULTS No moderation effects were observed. There were robust positive associations with cognitive function, independent of brain structure, for 2 individual proxies (verbal intelligence and education) and 16 composites (i.e. combinations of proxies). Verbal intelligence was statistically significant in all models. Education was significant only in models with executive function as the cognitive outcome variable. Three robust composites were observed in more than two-thirds of brain-cognition models: the composites of (1) occupational complexity and verbal intelligence, (2) education and verbal intelligence, and (3) education, occupational complexity, and verbal intelligence. However, no composite had larger average effects nor was more robust than verbal intelligence alone. CONCLUSION These results support the use of verbal intelligence as a proxy measure of CR in cross-sectional studies of cognitively healthy older adults.
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Affiliation(s)
- R Boyle
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - S P Knight
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
| | - C De Looze
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
| | - D Carey
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
| | - S Scarlett
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
| | - Y Stern
- Cognitive Neuroscience Division, Department of Neurology, Columbia University, New York City, USA
| | - I H Robertson
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
| | - R A Kenny
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
- Mercer's Institute for Successful Ageing, St. James's Hospital, Dublin, Ireland
| | - R Whelan
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland.
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Evans E, Coley SL, Gooding DC, Norris N, Ramsey CM, Green-Harris G, Mueller KD. Preliminary assessment of connected speech and language as marker for cognitive change in late middle-aged Black/African American adults at risk for Alzheimer's disease. APHASIOLOGY 2021; 36:982-1005. [PMID: 36016839 PMCID: PMC9398189 DOI: 10.1080/02687038.2021.1931801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 05/03/2021] [Indexed: 06/15/2023]
Abstract
Background Connected speech-language (CSL) has been a promising measure of assessing cognitive decline in populations at-risk for Alzheimer's disease and related dementias (ADRD) populations. A common way to obtain CSL is through using picture description tasks such as the most frequently used image Cookie Theft (CT). However, questions have been raised about using CT for diverse communities. Little is known about the CSL produced in response to this task in Black/African American (BAA) adults aged 48-74. Goals The present study's goals were to characterize CSL in BAA adults by sex and APOE-ε4 status from Milwaukee in the Wisconsin Registry for Alzheimer's Prevention (WRAP) study when presented with the CT picture description task and to identify differences in CSL output between BAAs and non-Hispanic Whites (NHW). Methods and Procedures We collected CSL samples from the CT picture from 48 BAA participants and 30 NHW participants from the WRAP participants in Milwaukee, WI group. CSL was analyzed using chi-square tests, T-tests, and ANCOVA. Linear mixed effect regression models were used to determine the association between cognitive status and longitudinal CSL in BAA participants with more than 1 timepoint. Outcomes and Results Declines in CSL of BAA participants were associated with subtle declines in cognition. Among BAA participants, we found no significant differences in speech measures in terms of sex and APOE-ε4 status. Our results showed no significant differences in speech measures between BAA and NHW groups. Conclusions CSL analysis provides an inexpensive way to evaluate preclinical changes in cognitive status that may not be as affected by other factors, such as ethnocultural background. Future studies with larger sample sizes and participants from other geographic locations can clarify these findings.
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Affiliation(s)
- Elizabeth Evans
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Sheryl L Coley
- Wisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Diane C Gooding
- Department of Psychology and Psychiatry, University of Wisconsin-Madison, Madison, WI University of Wisconsin, Madison, Wisconsin, USA
| | - Nia Norris
- Wisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Celena M Ramsey
- Wisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Gina Green-Harris
- Wisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Kimberly D Mueller
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Wisconsin, USA
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Giovannetti T, Mis R, Hackett K, Simone SM, Ungrady MB. The goal-control model: An integrated neuropsychological framework to explain impaired performance of everyday activities. Neuropsychology 2021; 35:3-18. [PMID: 33393796 DOI: 10.1037/neu0000714] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVE This review describes the relatively small body of neuropsychological and cognitive research conducted over the past 100 years focused on theoretical models explaining the neurocognitive processes that support everyday functioning and the breakdown of functional abilities in the face of neurological damage or disease. METHOD The historical roots of the theories of everyday activities based on direct observation of behavior in neurology and diary reports of everyday errors in cognitive psychology are presented, followed by a review of the empirical findings and resulting theoretical conceptualizations from case studies and group studies of various clinical populations in neuropsychology. RESULTS We conclude with a new framework (the goal-control model) that integrates the most recent empirical findings in neuropsychology with mechanisms proposed by cognitive models. CONCLUSIONS The goal-control model offers empirically supported solutions to understanding and predicting functioning in the real world. This new model generates testable predictions for future research and provides guidance for clinical assessment and interventions. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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Barba C, Garcia A, Clay OJ, Wadley VG, Andel R, Dávila AL, Crowe M. Quality of Education and Late-Life Cognitive Function in a Population-Based Sample From Puerto Rico. Innov Aging 2021; 5:igab016. [PMID: 34169152 PMCID: PMC8219031 DOI: 10.1093/geroni/igab016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Indexed: 11/23/2022] Open
Abstract
Background and Objectives We examined quality of education, literacy, and years of education in relation to late-life cognitive function and decline in older Puerto Ricans. Research Design and Methods Our sample consisted of 3,385 community-dwelling adults aged 60 years and older from the Puerto Rican Elderly: Health Conditions study. Quality of education was based on principal component analysis of variables gathered from Department of Education and Census reports. Literacy (yes/no) and years of education were self-reported. Cognitive function was assessed in participants’ homes at baseline and 4 years later using a previously validated Spanish-language 20-point global screening measure for dementia, the minimental Cabán. Regression models were adjusted for sociodemographic and life course covariates. Results Quality of education was positively correlated with both educational attainment and cognitive performance. Independent of years of education, literacy, childhood economic hardship, and adult economic hardship, compared to participants in the lowest quartile of education quality, those in the highest quartile had significantly better baseline cognitive performance (β = 0.09, p < .001). Quality of education did not consistently show an association with change in cognitive function over 4 years. Literacy and greater educational attainment were each independently associated with better cognitive function at baseline and less cognitive decline. Discussion and Implications Quality of education, literacy, and years of education, while interrelated, also show independent associations with cognitive functioning in older Puerto Ricans. The downstream factors of literacy and years of education were more closely related to age-related cognitive decline than quality of education.
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Affiliation(s)
- Cheyanne Barba
- Department of Psychology, University of Alabama at Birmingham, USA
| | - Alberto Garcia
- School of Public Health, University of Puerto Rico, San Juan, Puerto Rico
| | - Olivio J Clay
- Department of Psychology, University of Alabama at Birmingham, USA
| | - Virginia G Wadley
- Division of Gerontology, Geriatrics, and Palliative Care, University of Alabama at Birmingham, USA
| | - Ross Andel
- School of Aging Studies, University of South Florida, Tampa, USA
| | - Ana Luisa Dávila
- School of Public Health, University of Puerto Rico, San Juan, Puerto Rico
| | - Michael Crowe
- Department of Psychology, University of Alabama at Birmingham, USA
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Al-Jawahiri F, Nielsen TR. Effects of Acculturation on the Cross-Cultural Neuropsychological Test Battery (CNTB) in a Culturally and Linguistically Diverse Population in Denmark. Arch Clin Neuropsychol 2021; 36:381-393. [PMID: 31942602 DOI: 10.1093/arclin/acz083] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/01/2019] [Accepted: 12/12/2019] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Assessment of individuals from diverse ethnic backgrounds is a major challenge in current clinical neuropsychology as most neuropsychological tests are biased by linguistic, educational, and cultural differences. The aim of this study was to examine the effects of acculturation on the newly developed European Cross-Cultural Neuropsychological Test Battery. METHOD The study was a cross-sectional study carried out in Copenhagen, Denmark. Neuropsychological test performances of a Danish sample were compared to a culturally and linguistically diverse sample, and the effects of a number of acculturation variables were assessed using group comparisons, correlation analyses, and regression analyses. RESULTS A total of 152 participants were included in the study: 26 were native-born monolingual Danes and 126 had culturally and linguistically diverse backgrounds: 66 were immigrants from Turkey, 41 from Poland, and 19 from former Yugoslavia. In direct comparison, the only significant difference between the Danish and culturally and linguistically diverse samples was found on Animal Fluency. However, within the culturally and linguistically diverse sample, higher and lower acculturated groups significantly differed on several measures. The main associations between neuropsychological test performance and acculturation variables were found on measures loading on processing speed and executive function. CONCLUSIONS Overall, only limited effects of acculturation were found on the European Cross-Cultural Neuropsychological Test Battery. However, administering cross-cultural measures in the preferred language may not be sufficient to resolve challenges in cross-cultural assessment of processing speed and executive function as concept of speed and speeded performance is highly culture dependent.
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Affiliation(s)
| | - T Rune Nielsen
- Danish Dementia Research Centre, University of Copenhagen, Copenhagen, Denmark
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Morris EP, Byrd D, Summers AC, Tureson K, Guzman V, Crook CL, Mindt MR. Depressive Symptoms Differentially Predict Neurocognition in Latinx and Non-Hispanic White People Living with HIV. J Int Neuropsychol Soc 2021; 27:249-260. [PMID: 32967753 PMCID: PMC7969352 DOI: 10.1017/s1355617720000855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES Depression is common in people living with HIV (PLWH) and can contribute to neurocognitive dysfunction. Depressive symptoms in PLWH are often measured by assessing only cognitive/affective symptoms. Latinx adults, however, often express depressive symptoms in a somatic/functional manner, which is not typically captured in assessments of depression among PLWH. Given the disproportionate burden of HIV that Latinx adults face, examining whether variations in expressed depressive symptoms differentially predict neurocognitive outcomes between Latinx and non-Hispanic white PLWH is essential. METHODS This cross-sectional study included 140 PLWH (71% Latinx; 72% male; mean (M) age = 47.1 ± 8.5 years; M education = 12.6 ± 2.9 years) who completed a comprehensive neurocognitive battery, Wechsler Test of Adult Reading (WTAR), and Beck Depression Inventory-II (BDI-II). Neurocognitive performance was measured using demographically adjusted T-scores. BDI-II domain scores were computed for the Fast-Screen (cognitive/affective items) score (BDI-FS) and non-FS score (BDI-NFS; somatic/functional items). RESULTS Linear regressions revealed that the BDI-NFS significantly predicted global neurocognitive function and processing speed in the Latinx group (p < .05), such that higher physical/functional symptoms predicted worse performance. In the non-Hispanic white group, the cognitive/affective symptoms significantly predicted processing speed (p = .02), with more symptoms predicting better performance. Interaction terms of ethnicity and each BDI sub-score indicated that Latinx participants with higher cognitive/affective symptoms performed worse on executive functioning. CONCLUSIONS Depressive symptoms differentially predict neurocognitive performance in Latinx and non-Hispanic white PLWH. These differences should be considered when conducting research and intervention among the increasingly culturally and ethnically diverse population of PLWH.
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Affiliation(s)
- Emily P. Morris
- University of Michigan Department of Psychology, Ann Arbor, MI
| | - Desiree Byrd
- Icahn School of Medicine at Mount Sinai Department of Neurology, New York, NY
- Icahn School of Medicine at Mount Sinai Department of Psychiatry, New York, NY
- Queens College, City University of New York Department of Psychology, Flushing, NY
| | - Angela C. Summers
- Icahn School of Medicine at Mount Sinai Department of Neurology, New York, NY
- Fordham University Department of Psychology, New York, NY
| | - Kayla Tureson
- University of Southern California Department of Psychology, Los Angeles, CA
| | - Vanessa Guzman
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Cara L. Crook
- Icahn School of Medicine at Mount Sinai Department of Neurology, New York, NY
- Fordham University Department of Psychology, New York, NY
| | - Monica Rivera Mindt
- Icahn School of Medicine at Mount Sinai Department of Neurology, New York, NY
- Icahn School of Medicine at Mount Sinai Department of Psychiatry, New York, NY
- Fordham University Department of Psychology, New York, NY
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Normative and Equated Data of the Original and Basic Versions of the Montreal Cognitive Assessment among Community Dwelling Saudi Arabians. Behav Neurol 2021; 2021:5395627. [PMID: 33505533 PMCID: PMC7808841 DOI: 10.1155/2021/5395627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 09/10/2020] [Accepted: 12/24/2020] [Indexed: 11/17/2022] Open
Abstract
Introduction Currently, there are standard and basic versions of the MoCA, the latter designed for those with lower educational achievements. Community-based normative data on these versions of the MoCA from Arabic populations are deficient, and there is little data demonstrating how both scales perform in comparison. We aim to obtain normative performances from both versions and equate the measures of both scales. Methods Community-based recruitment of healthy volunteers ≥ 18 years of age. Participants underwent testing with both versions. Demographic data was collected with regard to age, gender, years of education, diabetes, and hypertension. Regression analysis was performed to determine significance of variables, and the circle-arc equating method was used to equate the two scores from each scale. Results 311 participants were included in the study. The mean (sd) age was 45.8 (15.96), females were 184 (59.16%), and the duration of education was 12.7 (5.67) years. The mean scores on the MoCA-A and MoCA-B were 21.47 (4.53) and 24.37 (4.71) (P < 0.0001), respectively. Multivariate regression showed significance of age and years of education in both versions (both variables with P < 0.0001). Correlation coefficient between the two scales was 0.77 (P < 0.0001). The largest equated difference between both MoCA versions was four points in those scoring from 10-20 on the MoCA-A. Conclusion We present normative data from a large Saudi Arabian community-based sample with two different MoCA tests, and an equating graph is presented to determine the corresponding expected performance between the two scales.
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Aghvinian M, Santoro AF, Gouse H, Joska JA, Linda T, Thomas KGF, Robbins RN. Taking the Test: A Qualitative Analysis of Cultural and Contextual Factors Impacting Neuropsychological Assessment of Xhosa-Speaking South Africans. Arch Clin Neuropsychol 2020; 36:976-980. [DOI: 10.1093/arclin/acaa115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/27/2020] [Accepted: 10/28/2020] [Indexed: 12/22/2022] Open
Abstract
Abstract
Objective
There is an urgent need to make neuropsychological (NP) testing more acceptable, accessible, and culturally salient, particularly for culturally, educationally, and linguistically diverse individuals from countries who may have little-to-no experience with NP testing. In settings with limited resources such as South Africa, unique cultural and contextual factors (e.g., structural inequality, poverty) may impact the experience of NP evaluation. Research in this area is limited and requires further exploration. This qualitative study explores the role of cultural and contextual factors that may impact the experience of NP evaluation in a sample of Xhosa-speaking South African adults. Participant interviews explored the context from which individuals arrived at the NP assessment (e.g., quality of education, understanding of cognitive disorders), and their experience of completing NP tests.
Method
This qualitative study used data from semistructured interviews to conduct a thematic analysis exploring contextual factors and the experience of completing NP tests for the first time among Xhosa-speaking South African adults (N = 22). Results: Although no participants had prior experience with NP testing, most found testing procedures acceptable. Most participants, however, reported a limited understanding of the purpose of NP testing and cognitive problems. Additionally, some participants reported perceptions and attitudes that could affect test performance, such as misinterpreting standard testing procedures (e.g., no feedback from the examiner, being stopped mid-task) as indicative of poor performance.
Conclusions
This study provided much needed exploration into unique cultural factors that may impact the experience of NP assessment in South Africa, which could bias test performance and interpretation, and may aid the field of cross-cultural NP in better serving culturally and linguistically diverse populations. In these countries, neuropsychologists may need to actively evaluate participants’ understanding of NP testing to help foster optimal assessment conditions. They may also need to educate participants on possible causes of cognitive disorders.
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Affiliation(s)
- Maral Aghvinian
- Department of Psychology, Fordham University, New York City, NY, USA
| | - Anthony F Santoro
- HIV Center for Clinical and Behavioral Studies, Columbia University and New York State Psychiatric Institute, New York City, NY, USA
| | - Hetta Gouse
- HIV Mental Health Research Unit, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - John A Joska
- HIV Mental Health Research Unit, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - Teboho Linda
- HIV Mental Health Research Unit, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - Kevin G F Thomas
- ACSENT Laboratory, Department of Psychology, University of Cape Town, Cape Town, South Africa
| | - Reuben N Robbins
- HIV Center for Clinical and Behavioral Studies, Columbia University and New York State Psychiatric Institute, New York City, NY, USA
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Berry J, Wallace KL, Shores EA. The Chinese Australian Neuropsychological Normative Study sample performance on Western and Chinese norms: Caveats for cross‐cultural neuropsychology. AUSTRALIAN PSYCHOLOGIST 2020. [DOI: 10.1111/ap.12378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jamie Berry
- Advanced Neuropsychological Treatment Services, Strathfield South, Australia
- Department of Psychology, Macquarie University, Sydney, Australia
| | - Karen L. Wallace
- Advanced Neuropsychological Treatment Services, Strathfield South, Australia
- Department of Clinical Psychology, St Joseph's Hospital, Auburn, Australia
| | - Edwin A. Shores
- Department of Psychology, Macquarie University, Sydney, Australia
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Wallace J, Moran R, Beidler E, McAllister Deitrick J, Shina J, Covassin T. Disparities on Baseline Performance Using Neurocognitive and Oculomotor Clinical Measures of Concussion. Am J Sports Med 2020; 48:2774-2782. [PMID: 32804545 DOI: 10.1177/0363546520946753] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Given the high participation of Black/African American individuals in high school sports, especially high-risk sports for concussion, it is important to note if racial and socioeconomic status (SES) differences exist in baseline performance on clinical measures of concussion. PURPOSE To explore the association between race and SES on baseline concussion assessments of neurocognitive performance and oculomotor function in adolescent athletes. STUDY DESIGN Cohort study (Diagnosis); Level of evidence, 3. METHODS A total of 564 high school athletes (mean ± SD age, 15.33 ± 1.1 years) completed the baseline Immediate Post-Concussion Assessment and Cognitive Test and King-Devick (KD) battery before the start of their competitive season. Race was defined as either White/non-Hispanic or Black/African American. SES status was determined by whether the individual's participating high school was a Title I or non-Title I school. A series of multivariable linear regression analyses were conducted to evaluate the association of computerized neurocognitive test scores (verbal memory, visual memory, motor processing speed, and reaction time), symptom severity scores, and KD scores by race and SES. RESULTS White/non-Hispanic individuals performed significantly better than Black/African American individuals on verbal memory (P < .01), visual memory (P < .01), visual motor processing speed (P < .01), and reaction time (P < .01) and had a lower symptom score (P < .01). Regarding SES, individuals from non-Title I schools performed better on visual memory (P = .05) and reaction time (P = .02) than individuals from Title I schools. Examination of cumulative KD test reading time revealed that there was no association between race on baseline reading times (P = .12). There was a significant association between cumulative reading time and SES (P = .02). Individuals from non-Title I schools performed significantly faster than individuals from Title I schools on KD test time. CONCLUSION Overall, race and SES influence neurocognitive and oculomotor concussion baseline performance in high school athletes. These findings add to the growing literature on the influence of race and SES on neurocognitive and oculomotor function baseline concussion assessments; they highlight the necessity for individualized concussion baseline measurements or race-specific normative reference values.
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Affiliation(s)
- Jessica Wallace
- Department of Health Science, University of Alabama, Tuscaloosa, Alabama, USA
- Department of Epidemiology, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - Ryan Moran
- Department of Health Science, University of Alabama, Tuscaloosa, Alabama, USA
| | - Erica Beidler
- Department of Athletic Training, Duquesne University, Pittsburgh, Pennsylvania, USA
| | | | - James Shina
- Youngstown State University, Youngstown, Ohio, USA
| | - Tracey Covassin
- Department of Kinesiology, Michigan State University, East Lansing, Michigan, USA
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Sachs BC, Steenland K, Zhao L, Hughes TM, Weintraub S, Dodge HH, Barnes LL, Craft S, Parker ML, Goldstein FC. Expanded Demographic Norms for Version 3 of the Alzheimer Disease Centers' Neuropsychological Test Battery in the Uniform Data Set. Alzheimer Dis Assoc Disord 2020; 34:191-197. [PMID: 32483017 PMCID: PMC7842186 DOI: 10.1097/wad.0000000000000388] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Norms for the Uniform Data Set Version 3 Neuropsychological Battery are available for cognitively normal individuals based on age, education, and sex; however, these norms do not include race. We provide expanded norms for African Americans and whites. METHODS Data from 32 Alzheimer's Disease Centers (ADCs) and ADC affiliated cohorts with global Clinical Dementia Rating Scale (CDR) Dementia Staging Instrument scores of 0 were included. Descriptive statistics for each test were calculated by age, sex, race, and education. Multiple linear regressions were conducted to estimate the effect of each demographic variable; squared semipartial correlation coefficients measured the relative importance of variables. RESULTS There were 8313 participants (16% African American) with complete demographic information, ranging from 6600 to 7885 depending on the test. Lower scores were found for older and less educated groups, and African Americans versus whites. Education was the strongest predictor for most tests, followed in order by age, race, and sex. Quadratic terms were significant for age and education, indicating some nonlinearity, but did not substantially increase R. CONCLUSIONS Although race-based norms represent incomplete proxies for other sociocultural variables, the appropriate application of these norms is important given the potential to improve diagnostic accuracy and to reduce misclassification bias in cognitive disorders of aging such as Alzheimer disease.
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Affiliation(s)
- Bonnie C. Sachs
- Department of Neurology and Wake Forest Alzheimer’s Disease Research Center, Wake Forest School of Medicine, Winston-Salem, NC
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine and Wake Forest Alzheimer’s Disease Research Center, Wake Forest School of Medicine, Winston-Salem, NC
| | - Kyle Steenland
- Department of Environmental and Occupational Health and Goizueta Alzheimer’s Disease Research Center, School of Public Health, Emory University, Atlanta, GA
| | - Liping Zhao
- Department of Biostatistics and Bioinformatics and Goizueta Alzheimer’s Disease Research Center, School of Public Health, Emory University, Atlanta, GA
| | - Timothy M. Hughes
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine and Wake Forest Alzheimer’s Disease Research Center, Wake Forest School of Medicine, Winston-Salem, NC
| | - Sandra Weintraub
- Departments of Psychiatry, Neurology and Alzheimer’s Disease Center, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Hiroko H. Dodge
- Department of Neurology, Layton Aging and Alzheimer’s Disease Center, Oregon Health & Science University, Portland, OR
| | - Lisa L. Barnes
- Departments of Neurological Sciences and Behavioral Sciences and Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL
| | - Suzanne Craft
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine and Wake Forest Alzheimer’s Disease Research Center, Wake Forest School of Medicine, Winston-Salem, NC
| | - Monica L. Parker
- Department of Neurology and Goizueta Alzheimer’s Disease Research Center, School of Medicine, Emory University, Atlanta, GA
| | - Felicia C. Goldstein
- Department of Neurology and Goizueta Alzheimer’s Disease Research Center, School of Medicine, Emory University, Atlanta, GA
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González HM, Tarraf W, González KA, Fornage M, Zeng D, Gallo LC, Talavera GA, Daviglus ML, Lipton RB, Kaplan R, Ramos AR, Lamar M, Cai J, DeCarli C, Schneiderman N. Diabetes, Cognitive Decline, and Mild Cognitive Impairment Among Diverse Hispanics/Latinos: Study of Latinos-Investigation of Neurocognitive Aging Results (HCHS/SOL). Diabetes Care 2020; 43:1111-1117. [PMID: 32139382 PMCID: PMC7171942 DOI: 10.2337/dc19-1676] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 01/27/2020] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Hispanics/Latinos are the largest ethnic/racial group in the U.S., have the highest prevalence of diabetes, and are at increased risk for neurodegenerative disorders. Currently, little is known about the relationship between diabetes and cognitive decline and disorders among diverse Hispanics/Latinos. The purpose of this study is to clarify these relationships in diverse middle-aged and older Hispanics/Latinos. RESEARCH DESIGN AND METHODS The Study of Latinos-Investigation of Neurocognitive Aging (SOL-INCA) is an ancillary study of the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). HCHS/SOL is a multisite (Bronx, NY; Chicago, IL; Miami, FL; and San Diego, CA), probability-sampled (i.e., representative of targeted populations), and prospective cohort study. Between 2016 and 2018, SOL-INCA enrolled diverse Hispanics/Latinos aged ≥50 years (n = 6,377). Global cognitive decline and mild cognitive impairment (MCI) were the primary outcomes. RESULTS Prevalent diabetes at visit 1, but not incident diabetes at visit 2, was associated with significantly steeper global cognitive decline (βGC = -0.16 [95% CI -0.25; -0.07]; P < 0.001), domain-specific cognitive decline, and higher odds of MCI (odds ratio 1.74 [95% CI 1.34; 2.26]; P < 0.001) compared with no diabetes in age- and sex-adjusted models. CONCLUSIONS Diabetes was associated with cognitive decline and increased MCI prevalence among diverse Hispanics/Latinos, primarily among those with prevalent diabetes at visit 1. Our findings suggest that significant cognitive decline and MCI may be considered additional disease complications of diabetes among diverse middle-aged and older Hispanics/Latinos.
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Affiliation(s)
- Hector M González
- Department of Neurosciences and Shiley-Marcos Alzheimer's Disease Research Center, University of California, San Diego, San Diego, CA
| | - Wassim Tarraf
- Institute of Gerontology and Department of Healthcare Sciences, Wayne State University, Detroit, MI
| | - Kevin A González
- Department of Neurosciences and Shiley-Marcos Alzheimer's Disease Research Center, University of California, San Diego, San Diego, CA
| | | | - Donglin Zeng
- Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC
| | - Linda C Gallo
- Department of Psychology, San Diego State University, San Diego, CA
| | | | - Martha L Daviglus
- Institute for Minority Health Research, College of Medicine, University of Illinois at Chicago, Chicago, IL
| | | | - Robert Kaplan
- Albert Einstein College of Medicine, New York, NY.,Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA
| | | | - Melissa Lamar
- Institute for Minority Health Research, College of Medicine, University of Illinois at Chicago, Chicago, IL.,Department of Psychiatry and Behavioral Sciences and Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL
| | - Jianwen Cai
- Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC
| | - Charles DeCarli
- Department of Neurology and Alzheimer's Disease Center, University of California, Davis, Sacramento, CA
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50
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Mueller KD, Norton D, Koscik RL, Morris MC, Jonaitis EM, Clark LR, Fields T, Allison S, Berman S, Kraning S, Zuelsdorff M, Okonkwo O, Chin N, Carlsson CM, Bendlin BB, Hermann BP, Johnson SC. Self-reported health behaviors and longitudinal cognitive performance in late middle age: Results from the Wisconsin Registry for Alzheimer's Prevention. PLoS One 2020; 15:e0221985. [PMID: 32324741 PMCID: PMC7179879 DOI: 10.1371/journal.pone.0221985] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 03/16/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Studies have suggested associations between self-reported engagement in health behaviors and reduced risk of cognitive decline. Most studies explore these relationships using one health behavior, often cross-sectionally or with dementia as the outcome. In this study, we explored whether several individual self-reported health behaviors were associated with cognitive decline when considered simultaneously, using data from the Wisconsin Registry for Alzheimer's Prevention (WRAP), an Alzheimer's disease risk-enriched cohort who were non-demented and in late midlife at baseline. METHOD We analyzed longitudinal cognitive data from 828 participants in WRAP, with a mean age at baseline cognitive assessment of 57 (range = 36-78, sd = 6.8) and an average of 6.3 years (standard deviation = 1.9, range = 2-10) of follow-up. The primary outcome was a multi-domain cognitive composite, and secondary outcomes were immediate/delayed memory and executive function composites. Predictors of interest were self-reported measures of physical activity, cognitive activity, adherence to a Mediterranean-style diet (MIND), and interactions with each other and age. We conducted linear mixed effects analyses within an Information-theoretic (IT) model averaging (MA) approach on a set of models including covariates and combinations of these 2- and 3-way interactions. The IT approach was selected due to the large number of interactions of interest and to avoid pitfalls of traditional model selection approaches. RESULTS Model-averaged results identified no significant self-reported health behavior*age interactions in relationship to the primary composite outcome. In secondary outcomes, higher MIND diet scores associated with slower decline in executive function. Men showed faster decline than women on delayed memory, independent of health behaviors. There were no other significant interactions among any other health behaviors and cognitive trajectories. CONCLUSIONS When multiple covariates and health behaviors were considered simultaneously, there were limited weak associations with cognitive decline in this age range. These results may be explained alone or in combination by three alternative explanations: 1) the range of cognitive decline is in middle age is too small to observe relationships with health behaviors, 2) the putative associations of these health behaviors on cognition may not be robust in this age range, or 3) the self-reported measures of the health behaviors may not be optimal for predicting cognitive decline. More study may be needed that incorporates sensitive measures of health behaviors, AD biomarker profiles, and/or other disease comorbidities.
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Affiliation(s)
- Kimberly D. Mueller
- Wisconsin Alzheimer’s Institute, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Department of Communication Sciences and Disorders, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Derek Norton
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Department of Biostatistics and Medical Informatics, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Rebecca L. Koscik
- Wisconsin Alzheimer’s Institute, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Martha C. Morris
- Rush Institute for Healthy Aging, Rush University Medical Center, Chicago, IL, United States of America
| | - Erin M. Jonaitis
- Wisconsin Alzheimer’s Institute, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Lindsay R. Clark
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Department of Neurology, University of Wisconsin–Madison, Madison, WI, United States of America
- Geriatric Research and Education Center, William S. Middleton Memorial Veteran’s Hospital, Madison, WI, United States of America
| | - Taylor Fields
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Samantha Allison
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Geriatric Research and Education Center, William S. Middleton Memorial Veteran’s Hospital, Madison, WI, United States of America
| | - Sara Berman
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Sarah Kraning
- Department of Communication Sciences and Disorders, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Megan Zuelsdorff
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Ozioma Okonkwo
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Nathaniel Chin
- Wisconsin Alzheimer’s Institute, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Cynthia M. Carlsson
- Wisconsin Alzheimer’s Institute, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Geriatric Research and Education Center, William S. Middleton Memorial Veteran’s Hospital, Madison, WI, United States of America
| | - Barbara B. Bendlin
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Bruce P. Hermann
- Wisconsin Alzheimer’s Institute, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Department of Neurology, University of Wisconsin–Madison, Madison, WI, United States of America
| | - Sterling C. Johnson
- Wisconsin Alzheimer’s Institute, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Wisconsin Alzheimer’s Disease Research Center, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI, United States of America
- Geriatric Research and Education Center, William S. Middleton Memorial Veteran’s Hospital, Madison, WI, United States of America
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