Elder-proxy agreement concerning the functional status and medical history of the older person: the impact of caregiver burden and depressive symptomatology

Multiple Roads to Success: A Latent Class Analysis on Successful Ageing Among Hong Kong Near-Centenarians and Centenarians (NCC)

Notwithstanding the oldest-old cohort being the fastest-growing population in most ageing societies, characterizing successful ageing in adults of advanced age, such as nonagenarians and centenarians, remains challenging. This study investigated the successful ageing subphenotypes using the data from Hong Kong Centenarian Study 2. Between April 2021 and September 2022, 146 family caregivers of community-dwelling older adults aged 95 or above were interviewed by phone. Latent class analysis identified three classes-Overall Frail (46.6%) with poor mobility, cognitive and functional health, Nonambulant (37.0%) but good functional health, and Robust (16.4%) with overall good health-from 11 indicators based on caregivers' reports. Although we found a low prevalence of fulfillment of all indicators of successful ageing, our findings will help care professionals appreciate the heterogeneity underlying partial successful ageing in this vulnerable cohort for segmented and targeted healthy longevity interventions.

Measuring the reliability of proxy respondents in behavioural assessments: an open question

BACKGROUND

In behavioural assessment, information can be gathered from internally referenced self-reports or from proxy informants.

AIMS

This study aimed to fine-tune a brief but reliable method for evaluating the proxy accuracy in cases where responses obtained from adult and older adults' patient cannot be considered reliable.

METHODS

We generated a set of items reflecting both overt and covert behaviours related to the basic instrumental activities of daily living. The psychometric properties of the content, factorial, and criterium validity of these items were then checked. The Proxy Reliability Questionnaire-ProRe was created. We tested the frequency of "I don't know" responses as a measure of proxy reliability in a sample of healthy older adults and their proxies, and in a second sample of proxy respondents who answered questions about their parents.

RESULTS

As expected, response precision was lower for items characterizing covert behaviours; items about covert compared to overt behaviours generated more "I don't know" answers. Proxies provided less "I don't know" responses when evaluating the parent, they claimed they knew better. Moreover, we tried to validate our approach using response confidence. Encouragingly, these results also showed differences in the expected direction in confidence between overt and covert behaviours.

CONCLUSIONS

The present study encourages clinicians/researchers to how well the proxy the patient know each other, the tendency of proxies to exhibit, for example, response bias when responding to questions about patients' covert behaviours, and more importantly, the reliability of informants in providing a clinical assessment of neurocognitive diseases associated with aging.

Prevalence and Predictors of Symptoms in Persons with Advanced Dementia Living in the Community

Background: Behavioral, psychological, and physical symptoms are prevalent in advanced dementia, as well as major contributors to poor quality of life, health care costs, caregiver burden, and nursing home placement. Objectives: To determine the frequency and severity of symptoms in persons with advanced dementia living in the community, as well as the association between symptoms and satisfaction with care, and the identification of factors associated with symptom burden. Design: Baseline data from a clinical trial testing the effectiveness of collaborative care home-based management for patients with advanced dementia. Setting/Subjects: Two hundred and one patient-caregiver dyads from an urban area in the United States, who were still residing in the community. Measurements: Caregivers completed the Symptom Management in End-of-Life Dementia (SM-EOLD) and Satisfaction with Care in End-of-Life Dementia (SWC-EOLD) scales. Results: Patients' mean age was 83.1; 67.7% were women, and most were either White (50.2%) or African American (43.8%). Most (88.1%) had severe dementia (Functional Assessment Staging Tool [FAST] stage 6 or 7). SM-EOLD mean score was 29.3 (on 0-45 scale) and SWC-EOLD score was 32.6 (on 10-40 scale). Pain, agitation, anxiety, and resistiveness to care were present at least weekly in ≥40% of patients. Multivariable linear regression modeling showed that higher neuropsychiatric symptom severity (assessed by the Neuropsychiatric Inventory), increased caregiver strain, and higher medical comorbidity were all independently associated with increased symptom burden. Satisfaction with care was high and had only a modest correlation (r = 0.20) with symptom burden. Conclusions: Community-dwelling patients with advanced dementia and their caregivers may benefit from home-based palliative care interventions to identify and manage burdensome symptoms.

Agreement between older adult patient and caregiver proxy symptom reports

BACKGROUND

Proxy report is essential for patients unable to complete patient-reported outcome (PRO) measures themselves and potentially beneficial when the caregiver perspective can complement patient report. In this study, we examine agreement between self-report by older adults and proxy report by their caregivers when completing PROs for pain, anxiety, depression, and other symptoms/impairments.

METHODS

Four PROs were administered by telephone to older adults and their caregivers followed by re-administration within 24 h in a random subgroup. The PROs included the PHQ-9 depression, GAD-7 anxiety, PEG pain, and SymTrak multi-dimensional symptom and functional status scales.

RESULTS

The sample consisted of 576 older adult and caregiver participants (188 patient-caregiver dyads, 200 patients without identified caregiver). The four measures had good internal (Cronbach's alpha, 0.76 to 0.92) and test-retest (ICC, 0.63 to 0.92) reliability whether completed by patients or caregivers. Total score and item-level means were relatively similar for both patient and caregiver reports. Agreement for total score as measured by intraclass correlation coefficient (ICC) was better for SymTrak-23 (0.48) and pain (0.58) than for anxiety (0.28) and depression (0.25). Multinomial modeling showed higher (worse) patient-reported scale scores were associated with caregiver underreporting, whereas higher caregiver task difficulty was associated with overreporting.

CONCLUSION

When averaged over individuals at the group level, proxy reports of PRO scores by caregivers tend to approximate patient reports. For individual patients, proxy report should be interpreted more cautiously for psychological symptoms as well as when patient-reported symptoms are more severe, or caregiver task difficulty is high.

Awareness of Performance on a Functional Cognitive Performance-Based Assessment Across the Adult Lifespan

As people age, their cognitive skills and ability to complete complex instrumental activities of daily living often decline in subtle ways. Older adults who are aware of these slight cognitive and functional changes spontaneously adapt and implement strategies to maximize performance. On the other hand, older adults with limited self-awareness are less likely to adjust performance or initiate compensatory strategies as they may not recognize the need to do so. This places them at higher risk of functional decline and loss of independence. Research on awareness of functional performance in healthy adults is, however, limited, and there is a paucity of assessment tools available to address questions of awareness and strategy use in functional tasks. We used the Weekly Calendar Planning Activity (WCPA) - a performance-based assessment of functional cognition including measures of awareness and strategy use - to investigate differences in performance, awareness, and strategy use across the adult lifespan. The WCPA requires examinees to schedule appointments into a weekly calendar while following rules designed to increase task demands. Healthy adults (n=342) from ages 18-92 were observed for strategy use and error recognition, while a post-test interview probed participants' reported strategy use and estimation of accuracy. The discrepancy between participant estimation and actual accuracy provided a measure of online awareness of performance where a larger estimation discrepancy indicated over-estimation of performance. Performance on the WCPA declined across the adult lifespan. Older adults were less likely to use self-monitoring strategies and used less effective strategies overall. Overestimation was associated with use of fewer strategies and lower accuracy in all age groups. Importantly, twice as many older adults overestimated compared to younger adults. Furthermore, the subset of older adults who had good awareness of performance was more likely to use effective strategies, to recognize errors, and achieved accuracy on par with their younger counterparts. Our results emphasize the importance of examining self-awareness of performance and analyzing the strategies used to perform a complex functional task. This information can provide a foundation for early detection of functional decline in aging and for designing interventions to maximize functional independence in aging.

Proxy reliability of the 12-item world health organization disability assessment schedule II among adult patients with mental disorders

PURPOSE

Despite the wide usage of World Health Organization Disability Assessment Schedule II (WHODAS 2.0) in psychiatry research and clinical practice, there was limited knowledge on its proxy reliability among people with mental disorders. This paper aimed to compare the 12-item WHODAS 2.0 responses of adult patients with mental disorders to their family caregivers.

METHODS

In this study, 205 pairs of patients with mental disorders and primary family caregivers were consecutively recruited from one inpatient mental health department in a large hospital in China. All participants completed the 12-item version WHODAS 2.0 to assess patients' functioning in the 30 days prior to the hospitalization. Measurement invariance, including configural, metric and scalar invariance, was tested across patient and proxy groups, using multi-group confirmatory factor analysis. Agreement between patients and proxies was examined by paired Wilcoxon tests and intraclass correlation coefficients (ICC). Subgroup analyses for proxy reliability were conducted within strata of proxy kinship and patient psychiatric diagnosis.

RESULTS

The 12-item WHODAS 2.0 achieved configural, metric and partial scalar invariance across patient and proxy groups. Unsatisfactory consistency was found for most items (ICC < 0.75, P < 0.05), especially for items on Cognition, Getting along, Life activities, and Participation in society (ICC < 0.4, P < 0.05). Spouses agreed with patients more often than parents (ICC ≥ 0.4, P < 0.05). The paired Wilcoxon tests found that impairment of patients with psychotic disorders tended to be overestimated by proxies while proxies tended to underestimate impairment of patients with mood disorders.

CONCLUSION

Our study reveals inconsistency between self and proxy reports in the 12-item WHODAS 2.0 among adult patients with mental disorders. When proxy reports is needed, spouses are preferred than parents. We should be aware of proxies' impairment overestimation among patients with psychotic disorders and underestimation among patients with mood disorders.

Depressive role impairment and subthreshold depression in older black and white women: race differences in the clinical significance criterion

OBJECTIVES

We examined race differences in the DSM-IV clinical significance criterion (CSC), an indicator of depressive role impairment, and its impact on assessment outcomes in older white and black women with diagnosed and subthreshold depression.

DESIGN

We conducted a secondary analysis of a community-based interview study, using group comparisons and logistic regression.

SETTING

Lower-income neighborhoods in a Midwestern city.

PARTICIPANTS

411 community-dwelling depressed and non-depressed women ≥ 65 years (45.3% Black; mean age = 75.2, SD = 7.2) recruited through census tract-based telephone screening.

MEASUREMENTS

SCID interview for DSM-IV to assess major depression and dysthymia; Center for Epidemiologic Studies-Depression Scale to define subthreshold depression (≥16 points); Mini-Mental State Examination, count of medical conditions, activities of daily living, and mental health treatment to assess health factors.

RESULTS

Black participants were less likely than Whites to endorse the CSC (11.8% vs. 24.1%; p = .002). There were few race differences in depressive symptom type, severity, or count. Blacks with subthreshold depression endorsed more symptoms, though this comparison was not significant after adjustments. Health factors did not account for race differences in CSC endorsement. Disregarding the CSC-eliminated differences in diagnosis rate, race was a significant predictor of CSC endorsement in a logistic regression.

CONCLUSIONS

Race differences in CSC endorsement are not due to depressive symptom presentations or health factors. The use of the CSC may lead to underdiagnosis of depression among black older adults. Subthreshold depression among Blacks may be more severe compared to Whites, thus requiring tailored assessment and treatment approaches.

Factors Influencing Family Burden in Pediatric Hematology/Oncology Encounters

Purpose

Caring for a child with cancer or hematologic disease places unique stress on a family unit. Families' subjective experience of this care-related burden mediates the relationship between cost and health-related outcomes. While financial costs are well described for families of pediatric hematology/oncology patients, it is unclear how cost and other factors each contribute to families' overall experience of care-related burden. This study identifies and groups the challenges that families report and describes their association with overall reported burden.

Methods

This mixed-methods analysis of a cross-sectional single-center study was conducted via structured, self-administered questionnaire provided to inpatient and outpatient caregivers of pediatric hematology/oncology patients. Respondents rated their perception of burden associated with that day's medical encounter on a 5-point Likert scale. The questionnaire included an open-ended prompt for caregivers about areas they deemed most burdensome. Primary themes were extracted and categorized.

Results

A total of 278 outpatient and 42 inpatient caregivers participated. Six thematic categories emerged: logistics, life disruption, care delivery system, parking, financial burden, and emotional burden. Outpatient caregivers reported more burden than inpatient caregivers for the first three categories, while inpatient caregivers reported more burden for the last three. Salient subthemes associated with higher and lower overall burden were identified in each theme category.

Conclusions

These data establish theme categories for future study of caregiver-perceived burden in pediatric hematologic/oncologic encounters, demonstrate that certain components of cost contribute disproportionately to caregivers' overall sense of care-related burden, and identify areas within each of the 6 burden categories that can be best targeted to alleviate caregiver burden.

Disability Prior to Death Among the Oldest-Old in China

Background

To estimate the prevalence of disability during the last 3 years prior to death among the oldest-old (≥80 years) in China.

Methods

We used data from the Chinese Longitudinal Healthy Longevity Survey (CLHLS), a nationally representative study of the oldest-old in China. The analytic sample included 23,934 decedents who died between 1998 and 2014 and had at least one interview within the last 3 years of life. Disability was defined as being incontinent or needing assistance in performing one or more of five other essential activities (bathing, transferring, dressing, eating, and toileting).

Results

About 57.8% (weighted) of the study decedents were female. The prevalence of disability increased modestly from 36 months to 24 months prior to death (20% to 23%), more rapidly from 24-months to 12-months before death (23% to 31%), and substantially from 12 months before death to the last month of life (31% to 48%). The disability rates were lowest for participants who died between 80 and 89 years, intermediate for those who died between 90 and 99 years, and highest for those who died at age 100 or older, although the patterns over the 3-year period were comparable for the three age groups. At each time point prior to death, a higher percentage of women was disabled than men.

Conclusions

In this large nationally representative sample of the oldest-old in China, the prevalence of disability during the 3 years prior to death is high and is greater in women than men and those who die at the oldest ages.

Agreement between self-reports, proxy-reports and the National Patient Register regarding diagnoses of cardiovascular disorders and diabetes mellitus in a population-based sample of 80-year-olds

Background

cognitive impairment is common among older adults, necessitating the use of collateral sources in epidemiological studies involving this age group. The objective of this study was to evaluate agreement between self- and proxy-reports of cardiovascular disorders and diabetes mellitus in a population-based sample of 80-year-olds. Further, both self- and proxy-reports were compared with hospital register data.

Methods

data were obtained from the Gothenburg H70 Birth Cohort Studies in Sweden. The study had a cross-sectional design and information was collected through semi-structured interviews in 2009–2012 from participants born in 1930 (N = 419) and their proxy informants. The National Patient Register provided diagnoses registered during hospital stays. Agreement was measured with Kappa values (K).

Results

agreement between self- and proxy-reports was substantial for diabetes mellitus (K = 0.79), atrial fibrillation (K = 0.61), myocardial infarction (K = 0.75), angina pectoris (K = 0.73) and hypertension (K = 0.62), and fair for intermittent claudication (K = 0.38) and heart failure (K = 0.40). Compared to the National Patient Register, a large proportion of those with a hospital discharge diagnosis were also self- and proxy-reported.

Conclusions

proxy informants can be an important source of information, at least for well-defined conditions such as myocardial infarction, angina pectoris and diabetes mellitus.

Understanding Male Caregivers' Emotional, Financial, and Physical Burden in the United States

Men caregivers face caregiving burden, have weak support networks and are less likely to seek out programs which increase their caregiving capabilities and help them cope with this burden. Using the 2011 and 2015 National Study of Caregiving (NSOC) database and hierarchical regressions, we studied the emotional, financial, and physical burden of male caregivers as spouses, sons, and other caregivers by assessing the impact of caregiver characteristics, tasks and resources for each subgroup. We highlighted the importance of using a nationally representative database for men caregivers only and emphasized that these caregivers are not a monolithic group. We found that all caregivers experienced these three burden types, particularly elevated emotional stress, with sons reporting the highest emotional and financial strain levels. Assisting with personal care was the most stressful task and caregivers vastly under-utilized support and training. Our results suggest that burden suppressants included having family and friends help with caregiving, having time to decompress, and feeling appreciated by the care recipient. These findings offer insight for devising future policies that intentionally include relationship and burden type to encourage improved and more caregiving from men while supporting their well-being.

Physical Impairments Associated With Post-Intensive Care Syndrome: Systematic Review Based on the World Health Organization's International Classification of Functioning, Disability and Health Framework

BACKGROUND

Post-intensive care syndrome (PICS) is a constellation of new or worsening impairments in physical, mental, or cognitive abilities or a combination of these in individuals who have survived critical illness requiring intensive care.

PURPOSE

The 2 purposes of this systematic review were to identify the scope and magnitude of physical problems associated with PICS during the first year after critical illness and to use the World Health Organization's International Classification of Functioning, Disability and Health (ICF) framework to elucidate impairments of body functions and structures, activity limitations, and participation restrictions associated with PICS.

DATA SOURCES

Ovid MEDLINE, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, CINAHL Plus with Full Text (EBSCO), Web of Science, and Embase were searched from inception until March 7, 2017.

STUDY SELECTION

Two reviewers screened titles, abstracts, and full text to independently determine study eligibility based on inclusion and exclusion criteria.

DATA EXTRACTION

Study methodological quality was assessed using the Newcastle-Ottawa Scale. Data describing study methods, design, and participant outcomes were extracted.

DATA SYNTHESIS

Fifteen studies were eligible for review. Within the first year following critical illness, people who had received intensive care experienced impairments in all 3 domains of the ICF (body functions and structures, activity limitations, and participation restrictions). These impairments included decreased pulmonary function, reduced strength of respiratory and limb muscles, reduced 6-minute walk test distance, reduced ability to perform activities of daily living and instrumental activities of daily living, and reduced ability to return to driving and paid employment.

LIMITATIONS

The inclusion of only 15 observational studies in this review may limit the generalizability of the findings.

CONCLUSIONS

During the first year following critical illness, individuals with PICS experienced physical impairments in all 3 domains of the ICF.

Are Disagreements in Caregiver and Patient Assessment of Patient Health Associated with Increased Caregiver Burden in Caregivers of Older Adults with Cancer?

BACKGROUND

As patients age, caregivers increasingly provide essential support and patient information. We sought to determine if patient-caregiver assessments of patient health differ and if differences contribute to burden in caregivers of older adults with cancer.

MATERIALS AND METHODS

One hundred patients, aged ≥65, and their caregivers independently assessed patient function, comorbidity, nutrition, social activity, social support, and mental health. Caregivers completed the Caregiver Strain Index (CSI). Patient-caregiver assessments were compared using the Wilcoxon signed rank test and paired t test. Association between caregiver burden and differences between patient-caregiver assessments was examined using generalized linear regression.

RESULTS

Median patient age was 70 (range 65-91) and 70% had advanced disease. Sixty percent of patients reported requiring help with instrumental activities of daily living (IADLs); most had good social support (median Medical Outcomes Study [MOS]-Social Support Survey score 92) and mental health (median Mental Health Inventory score 85).Caregivers were a median age of 66 (range 28-85), 73% female, 68% spousal caregivers, and 79% lived with the patient. Caregivers rated patients as having poorer physical function (more IADLs dependency [p = .008], lower Karnofsky Performance Status [p = .02], lower MOS-Physical Function [p < .0001]), poorer mental health (p = .0002), and having more social support (p = .03) than patients themselves. Three-quarters of caregivers experienced some caregiver burden (mean CSI score 3.1). Only differences in patient-caregiver assessment of the patient's need for help with IADLs were associated with increased caregiver burden (p = .03).

CONCLUSION

Patient-caregiver assessments of patient function, mental health, and social support differ. However, only differences in assessment of IADLs dependency were associated with increased caregiver burden.

IMPLICATIONS FOR PRACTICE

As patients age, there is a higher incidence of frailty and cognitive impairments. As a result, caregivers play an increasingly vital role in providing information about patient health to healthcare providers, which is used to help healthcare providers tailor treatments and optimize patient health. These findings highlight that caregiver reporting in older adults with cancer may not replace patient reporting in those older adults who are otherwise able to self-report. Furthermore, clinicians should check for caregiver burden in caregivers who report providing more help with instrumental activities of daily living than patients themselves report and provide appropriate support as needed.

Disability Measurement in the Health and Retirement Study

The Health and Retirement Study (HRS) has provided extensive and detailed national data on disability since it began in 1992, and has been used extensively in studies of disability trends and trajectories. We summarize conceptual frameworks used to characterize disability and review the HRS measures of functioning, work disability, and employer accommodations. HRS survey questions have experienced changes in wording, skip logic, or other design features over the life of the study, and we comment on the analytic challenges posed by those changes. Among our conclusions are (1) work disability and benefit eligibility are important concepts that should be considered for redesign to better reflect current concepts and policy issues; (2) methodological studies of changes in wording or skip logic should be undertaken; and (3) minor additions to survey content in areas such as temporal reference periods or changes in social-participation activities would improve measurement.

Pragmatic and Internal Validity Issues in Sampling in Caregiver Studies

Objectives: Studies of caregivers illustrate a classic sampling dilemma: maximizing recruitment without compromising study validity. Because caregivers are defined in relation to a care recipient, sampling methods are often determined by pragmatic decisions such as access, efficiency, and costs. However, overlooking validity may result in selection bias, misclassification of caregiver status, and the confounding of results. Validity and pragmatic concerns were compared in four caregiver studies that used different sampling frames: community based, Alzheimer’s disease registry, and ancillary studies to existing epidemiologic studies. Methods: Systematic comparison of validity and of pragmatic aspects of sampling frames, recruitment methods, and participation rates, with attention to caregiver identification, inclusion criteria, and sample restriction. Results: All studies used task-based inclusion criteria. Caregiver participation rates ranged from 81% to 96%, with higher rates in community-based and registry-based studies than in ancillary studies. The latter studies benefited from unbiased selection of noncaregivers. Discussion: Regardless of sampling frame, standard task-based inclusion criteria to define caregivers may enhance validity.

Modifiable Impairments Predict Progressive Disability Among Older Persons

Our purpose was to determine the extent to which a predetermined set of modifiable impairments predicted progression of disability. Method: We conducted a 3-year follow-up of two community-based cohorts of older adults. The impairment areas included lower extremity, upper extremity, hearing, vision, and affect. Home management and social or productive activities were the domains of function investigated. Results: All five impairments were of at least borderline significance in predicting decline in both functional domains in both cohorts with the exception of hearing for home management activities. The five impairments together explained from 17% to 23% of the decline seen in the functional outcomes (partial R2s 0.17 to 0.23). Discussion: Five prevalent and potentially modifiable impairments explained much of the progressive disability experienced. Given the priority that older patients place on function as a health outcome, these impairments should be routinely assessed and modified.

Reliability in Measuring Preinjury Physical Function in Orthopaedic Trauma

OBJECTIVE

In orthopaedic trauma, patients' functional status scores cannot be collected before injury. Due to the lack of these data, it is difficult to reliably determine if patients have returned to their preinjury level of physical function. The goal of this article is to determine if patients' assessment of preinjury function agrees with that of familiar proxies, to determine whether patient assessment of preinjury function may be regarded as reliable.

METHODS

At first postinjury outpatient follow up, orthopaedic trauma patients and their proxies were asked to independently complete the PROMIS physical function computer adaptive test (PF CAT) based on how they perceived the function of the patient before injury. Intraclass correlation, paired sample t tests, and 95% confidence intervals were used to analyze patient-proxy agreement.

RESULTS

Fifty patient-proxy pairs completed the questionnaire at an average of 14.3 (SD = 1.1) days postoperative (average 19.3, SD = 12.1 days postinjury). Patient mean PF CAT score was 57.92 (SD = 10.38) for patients and 56.59 (SD = 11.50) for proxies. Paired samples t test showed that patient's PF CAT scores were not significantly different from proxy scores [mean score difference = 1.33; 95% CI = (-1.28, 3.94); P = 0.311]. Intraclass correlation between patient and proxy scores was 0.79. There was no notable bias.

DISCUSSION

Good agreement in PF CAT preinjury assessment between patients and proxies support patients' ability to report reliable preinjury physical functioning in the early postinjury setting using the PF CAT.

Functional status after critical illness: agreement between patient and proxy assessments

BACKGROUND

assessment of baseline functional status of older patients during and after intensive care unit (ICU) admission is often hampered by challenges related to the critical illness such as cognitive dysfunction, neuropsychological morbidity and pain. To explore the reliability of assessments by carefully chosen proxies, we designed a discriminating selection of proxies and evaluated agreement between patient and proxy responses by assessing activities of daily living (ADLs) at 1 month post-ICU discharge.

METHODS

patients ≥60 years old admitted to the medical ICU were enrolled in a prospective parent cohort studying delirium. Proxies were carefully screened at ICU admission to choose the best available respondent. Follow-up interviews, including instruments for ADLs, were conducted 1 month after ICU discharge. We examined 179 paired patient-proxy follow-up interviews. Kappa statistics assessed inter-observer agreement, and McNemar's exact test assessed response differences.

RESULTS

patients averaged 73.3 ± 8.1 years old with 29% having evidence of cognitive impairment. Proxies were most commonly spouses (38%) or children (39%). Overall, there was substantial (κ ≥ 0.6) to excellent agreement (κ ≥ 0.8) between patients and proxies on assessment of all but one basic and one instrumental ADL.

CONCLUSION

proxies carefully chosen at ICU admission show high levels of inter-observer agreement with older patients when assessing current functional status at 1 month post-ICU discharge. This motivates further study of proxy assessments that could be used earlier in critical illness to assess premorbid functional status.

Getting help from others: the effects of demand and supply

OBJECTIVES

This article investigates whether the help with care needs that is received from others depends on the potential supply of family helpers.

METHODS

Data from the first round of survey data collected in the National Health and Aging Trends Study are used to create measures of whether help is received, the number of helpers, and the hours of help received. Regression analysis is used to relate these outcomes to indicators of the demand for and supply of helpers.

RESULTS

Analyses suggest limited evidence that the receipt of help is a supply-driven phenomenon. Although the measures of child-caregiver supply are not associated with a binary indicator of help received, caregiver-supply factors are associated with the number of helpers and the total hours of help received.

DISCUSSION

Findings on the total number of helpers and total hours of care have implications for the division of care labor within families and between families and nonfamily members. Foreseeable trends in the demand for and the supply of help suggest further evolution in patterns of elders' receipt of help with care needs. Even if those with needs for care continue to have their needs addressed by one or more helpers, the number of helpers, and the aggregate amount of help they provide, is likely to undergo adjustment in response to changing family patterns.

Symptom incongruence trajectories in lung cancer dyads

CONTEXT

There is little known about the pattern of change in patient-family member symptom incongruence across the lung cancer trajectory.

OBJECTIVES

This study examined trajectories of patient-family member incongruence in perceptions of patient physical function, pain severity, fatigue, and dyspnea in lung cancer dyads and explored the association with family member grief after patient death.

METHODS

Lung cancer patients and their family members providing care (n = 109 dyads) rated patient symptoms and physical function five times over 12 months. Symptom incongruence trajectories were analyzed using multilevel modeling.

RESULTS

Patient-family member incongruence did not significantly change over time, on average, except in the case of patient physical function where incongruence significantly declined. There was significant variability around trajectories of incongruence for all symptoms except fatigue. Exploratory analysis on a subsample of 22 bereaved family members found that incongruence regarding patient fatigue was associated with family member grief two months after patient death.

CONCLUSION

Findings suggest the importance of modeling symptom incongruence over time and taking a dyadic approach to the illness context to identify interventions that promote adjustment and quality of life for both patient and family member.

Temporal associations between the different domains of rheumatoid arthritis disease activity and the onset of patient-reported depressive symptoms

BACKGROUND

Depression is a frequently occurring comorbid condition in patients with rheumatoid arthritis (RA), and research into the temporal relationships regarding its onset has mainly focused on functional status. The study aim was to examine temporal associations of the diverse measures of RA disease activity with incident self-reports of depressive symptoms.

METHODS

RA patients from the Consortium of Rheumatology Researchers of North America (CORRONA) registry were utilized. Cox regression was used to assess the lagged time-varying association of RA disease activity with the incident onset of depressive symptoms as measured using a single-item depression question. Predictor variables included joint counts, global assessments, pain, function, serum biomarkers, and composite disease activity. Hazard ratios (HRs) comparing categorical quintiles were estimated with 95 % confidence intervals.

RESULTS

Every metric of disease activity, except inflammatory markers, were significantly associated with the self-reported onset of depressive symptoms. Adjusted HRs comparing fifth quintiles to first quintiles were the following: CDAI = 2.3 [2.1-2.7]; pain = 2.3 [2.0-2.6]; SJC = 1.4 [1.4-1.6]. When examining successive self-reports (two consecutive), the magnitude of the associations greatly increased: CDAI = 3.6 [2.5-5.0].

CONCLUSIONS

The data suggest depressive symptom onset in RA patients is related to measures reported by the patient: pain, functional status, and global disease activity; and measures reported by providers, rather than biological markers. The magnitude of the associations, however, were greater for the patient-reported measures when compared to physician assessments, implying that patients' experience of their disease activity may be a precipitating factor of depression onset.

The use of the EQ-5D as a measure of health-related quality of life in people with dementia and their carers

PURPOSE

To assess the acceptability, validity and inter-rater agreement of self- and family carer proxy ratings of the EQ-5D as a generic health-related quality of life (HRQOL) measure, in people with mild to moderate dementia (PwD) living in the community. A secondary aim was to identify the most important factors influencing self- and family carer proxy ratings of HRQOL, distinguishing between spouse and adult child caregiver ratings.

METHODS

Cross-sectional study of 488 dyads using the EQ-5D. Inter-rater agreement was examined using weighted kappa scores, and validity by investigating the association of self- and family carer ratings with clinical variables. Factors affecting HRQOL ratings were analysed using multivariate regression.

RESULTS

The response rate of the EQ-5D was satisfactory; however, agreement between self- and family carer ratings was poor. The most important predictors of PwD and carer ratings of the PwD's HRQOL were family carer ratings of activities of daily living and mood. Anxiety experienced by the PwD was a significant predictor of self-rated HRQOL, whereas depressive symptoms independently predicted family carer ratings. The type of the caregiving relationship influenced carer ratings of HRQOL, whereby sons and daughters rated HRQOL lower for the PwD compared with spousal caregivers.

CONCLUSIONS

People with mild to moderate dementia are able to rate their own HRQOL through a brief generic instrument; however, self-ratings consistently differ from family carer ratings, which should be acknowledged in cost-effectiveness analyses. Spouse caregivers rate HRQOL for the PwD more positively compared to adult children.

Perceived mental health status of drug users with HIV: concordance between caregivers and care recipient reports and associations with caregiving burden and reciprocity

Because caregivers' monitoring of care recipients' mental health status likely facilitates provision of needed forms of assistance, the current study examines relationship factors associated with agreement in caregiver- and recipient self-reports of recipients' mental health status. Participants were former or current injection drug using persons with HIV/AIDS and their main caregivers (N = 258 dyads). Care recipients completed the Center for Epidemiologic Studies Depression scale and caregivers responded to a single item rating their recipients' mental health. Nearly two-thirds (64.7 %) of dyads agreed on care recipients' mental health status (κ = .26, p < .001). More secondary stressors of care, less reciprocity, and care recipients' greater physical limitations, substance use, and younger age predicted greater agreement on recipients' having poorer mental health. Greater secondary stressors and lower income were associated with less agreement on care recipients' mental health. Findings, which suggest that promoting reciprocity and alleviating secondary stressors of caregiving may help facilitate these caregivers' improved assessment of their care recipients' mental health status, have implications to dyadic approaches to promote drug users' HIV health outcomes.

Delirium in the ICU and subsequent long-term disability among survivors of mechanical ventilation

OBJECTIVE

Survivors of critical illness are frequently left with long-lasting disability. The association between delirium and disability in critically ill patients has not been described. We hypothesized that the duration of delirium in the ICU would be associated with subsequent disability and worse physical health status following a critical illness.

DESIGN

Prospective cohort study nested within a randomized controlled trial of a paired sedation and ventilator weaning strategy.

SETTING

A single-center tertiary-care hospital.

PATIENTS

One hundred twenty-six survivors of a critical illness.

MEASUREMENTS AND MAIN RESULTS

Confusion Assessment Method for the ICU, Katz activities of daily living, Functional Activities Questionnaire (measuring instrumental activities of daily living), Medical Outcomes Study 36-item Short Form General Health Survey Physical Components Score, and Awareness Questionnaire were used. Associations between delirium duration and outcomes were determined via proportional odds logistic regression with generalized estimating equations (for Katz activities of daily living and Functional Activities Questionnaire scores) or via generalized least squares regression (for Medical Outcomes Study 36-item Short Form General Health Survey Physical Components Score and Awareness Questionnaire scores). Excluding patients who died prior to follow-up but including those who withdrew or were lost to follow-up, we assessed 80 of 99 patients (81%) at 3 months and 63 of 87 patients (72%) at 12 months. After adjusting for covariates, delirium duration was associated with worse activities of daily living scores (p = 0.002) over the course of the 12-month study period but was not associated with worse instrumental activities of daily living scores (p = 0.15) or worse Medical Outcomes Study 36-item Short Form General Health Survey Physical Components Score (p = 0.58). Duration of delirium was also associated with lower Awareness Questionnaire Motor/Sensory Factors scores (p 0.02).

CONCLUSION

In the setting of critical illness, longer delirium duration is independently associated with increased odds of disability in activities of daily living and worse motor-sensory function in the following year. These data point to a need for further study into the determinants of functional outcomes in ICU survivors.

Health Status in Patients with Alzheimer’s Disease: An Investigation of Inter-rater Agreement

OBJECTIVE

The purpose of the present study was to examine the level of agreement between health status ratings provided by patients with Alzheimer's disease and by their proxies.

BACKGROUND

Because proxy-completed responses are often necessary in assessing health outcomes for the elderly, it is necessary to determine the feasibility and potential limitations of using proxies as a patient substitutes.

METHODS

To assess the potential utility of proxy responses on health status when subjects present a cognitive impairment, this study compared the responses of 70 subjects with Alzheimer's disease and those of their family and/or care provider proxy using the SF-36. Agreement between proxies and patients was measured by intraclass correlation coefficients (ICCs).

RESULTS

The proportion of exact agreement between patients and proxies on the 36 items ranged from 3.3 to 41.7%. Results reveal poor to moderate agreement between patient and proxy reports. Proxy reliability varied according to the relationship of the proxy to the index subject. Agreement decreased significantly with increasing severity of dementia and with increasing severity of Physical status (Katz ADL). Agreement was better for measures of functions that are directly observable and relatively poor for more subjective measures.

CONCLUSIONS

Our results confirm the importance of the information source used for patient health status.

Caregiver rating bias in mild cognitive impairment and mild Alzheimer's disease: impact of caregiver burden and depression on dyadic rating discrepancy across domains

BACKGROUND

Caregivers of individuals with dementia are biased in their rating of mental health measures of the care receiver. This study examines caregiver burden and depression as predictors of this bias for mild cognitive impairment and mild Alzheimer's disease in different domains.

METHODS

The sample consisted of 202 persons: 60 with mild cognitive impairment, 41 with mild Alzheimer's disease, and 101 caregivers. Discrepancy scores were calculated by subtracting the mean caregiver score from the respective mean patient score on the following assessment instruments: the Geriatric Depression Scale, Apathy Evaluation Scale, Bayer-Activities of Daily Living Scale, and Quality of Life-AD scale. Caregiver burden and depression were assessed by the Zarit Burden Interview and the Center for Epidemiologic Studies Depression Scale.

RESULTS

Intraclass correlation coefficients were low for apathy (0.38), daily functioning (0.38), and quality of life (0.30) and moderate for depression (0.49). These domains showed negative rating discrepancies, which indicates caregiver rating bias for all four domains. Regression analyses revealed that caregiver burden significantly contributed to explaining these discrepancies in the domains apathy, daily functioning, and quality of life.

CONCLUSION

Caregiver rating bias can be attributed to caregiver burden. When caregiver burden is present, data based on caregiver ratings should therefore be interpreted with caution.

Mapping utility scores from the Barthel index

PURPOSE

It is not always possible to collect utility-based outcome data, like EQ-5D, needed for conducting economic evaluations in populations of older people. Sometimes, information on other non-utility outcome measures may have been collected. This paper examines the possibility of mapping the EQ-5D from a non-utility-based outcome, the Barthel index.

METHODS

Data for 1,189 UK intermediate care patients were used. Ordinary least squares (OLS), censored least absolute deviations (CLAD) estimator and multinomial logistic (ML) models were used. The mean absolute error (MAE) and root-mean-squared error (RMSE) were used to estimate the predictive accuracy of eight regression models. Validation of primary models was carried out on random samples of data collected at admission and discharge.

RESULTS

Models where the EQ-5D was entered as a continuous dependent variable and Barthel dimensions used as explanatory variables performed better. CLAD performed best on MAE and OLS on the RMSE, while the ML performed the worst on both measures. The CLAD predicted EQ-5D scores that matched the observed values more closely than the OLS.

CONCLUSIONS

It is possible to reasonably predict that the EQ-5D from the Barthel using regression methods and the CLAD model (4) is recommended.

Comparing reports from hip-fracture patients and their proxies: implications on evaluating sex differences in disability and depressive symptoms

OBJECTIVE

This study compared sex differences in disability and depressive symptoms using reports from hip fracture patients and their proxies.

METHOD

Hip fracture patients (49 men, 183 women) aged ≥65 years and proxies were interviewed 1 year postfracture. Outcomes were Center for Epidemiological Studies Depression (CES-D) and number of dependencies in performing activities of daily living and instrumental activities of daily living.

RESULTS

Mean ADL sex differences (men minus women) were 0.40 (p = .37) using proxy reports and 0.70 (p = .08) using patient self-reports. Mean CES-D sex differences were -3.60 (p = .02) using proxy reports and -1.26 (p = .38) using patient self-reports. Discrepancies between patients and proxies were smallest for proxies who have lived with the patient ≥ 1 year.

DISCUSSION

Patients and proxies produced conflicting conclusions about sex differences. Results suggest that ideal proxies to recruit are those who have been cohabitating with the patients for an extended length of time.

The next generation of psychological autopsy studies. Part I. Interview content

The psychological autopsy (PA) is a systematic method to understand the psychological and contextual circumstances preceding suicide. The method requires interviews with one or more proxy respondents (i.e., informants) of decedents. The methodological challenges that need to be addressed when determining the content of these research interviews for PA studies are described and recommendations are made for meeting these challenges in future PA investigations. Ways to improve the data collected about mental disorders and life events--domains that are assessed in almost all PA studies--are discussed at length. Other understudied content areas considered include the role of personality traits, medical illness and functional limitations, availability of lethal agents, medications, and select distal variables including child maltreatment and family history of mental disorders and suicide. The benefits and challenges to using common protocols across studies are also discussed.

Correlates of Functional Capacity Among Centenarians

This study investigated correlates of functional capacity among participants of the Georgia Centenarian Study. Six domains (demographics and health, positive and negative affect, personality, social and economic support, life events and coping, distal influences) were related to functional capacity for 234 centenarians and near centenarians (i.e., 98 years and older). Data were provided by proxy informants. Domain-specific multiple regression analyses suggested that younger centenarians, those living in the community and rated to be in better health were more likely to have higher functional capacity scores. Higher scores in positive affect, conscientiousness, social provisions, religious coping, and engaged lifestyle were also associated with higher levels of functional capacity. The results suggest that functional capacity levels continue to be associated with age after 100 years of life and that positive affect levels and past lifestyle activities as reported by proxies are salient factors of adaptation in very late life.

Disability among elderly survivors of mechanical ventilation

RATIONALE

Studies of long-term functional outcomes of elderly survivors of mechanical ventilation (MV) are limited to local samples and biased retrospective, proxy-reported preadmission functional status.

OBJECTIVES

To assess the impact on disability of hospitalization with MV, compared with hospitalization without MV, accounting for prospectively assessed prior functional status.

METHODS

Retrospective population-based longitudinal cohort study of Medicare beneficiaries age 65 and older enrolled in the Medicare Current Beneficiary Survey, 1996-2003.

MEASUREMENTS AND MAIN RESULTS

Premeasures and postmeasures of disability included mobility difficulty and weighted activities of daily living disability scores ranging from 0 (not disabled) to 100 (completely disabled) based on self-reported health and functional status collected 1 year apart. Among 54,771 person-years (PY) of observation over 7 calendar years of data, 42,890 PY involved no hospitalization, 11,347 PY involved a hospitalization without MV, and 534 PY included a hospitalization with MV. Mortality at 1 year was 8.9%, 23.9%, and 72.5%, respectively. The level of disability at the postassessment was substantially higher for a prototypical patient who survived after hospitalization with MV (adjusted activities of daily living disability score [95% confidence interval] 14.9 [12.2-17.7]; adjusted mobility difficulty score [95% confidence interval] 25.4 [22.4-28.4]) compared with an otherwise identical patient who survived hospitalization without MV (11.5 [11.1-11.9] and 22.3 [21.8-22.9]) or who was not hospitalized (8.0 [7.9-8.1] and 13.4 [13.3-13.6]).

CONCLUSIONS

The greater marginal increase in disability among survivors of MV compared with survivors of hospitalization without MV is larger than would be predicted from prior functional status.

Patient-surrogate agreement of predictors of decision delay among patients with acute myocardial infarction: a questionnaire survey

BACKGROUND

Studies that assessed predictors of patient delay to seek healthcare for acute myocardial infarction lack generalization to all patient population as it investigated patients who survived coronary events.

OBJECTIVES

To evaluate utility of using surrogates to proxy patients who cannot be interviewed and to examine patients-surrogate agreement.

DESIGN

A cross-sectional descriptive survey study. The cognitive and emotional domains of the modified Response to Symptoms Questionnaire were used to interview participants.

PARTICIPANTS AND SETTINGS

A convenient sample of patient-surrogate pairs was collected (n=109). Hospitalized patients with acute myocardial infarction were eligible if they were at least 18 years old, hemodynamically stable, pain free or controlled pain during interview, and could identify a surrogate. Exclusions (n=45) were patients transferred from other hospitals or those who had acquired heart attack following their admission. A surrogate was defined as an individual who witnessed the onset of symptoms and whom the patient has articulated symptoms with prior to admission.

METHODS

Patient and surrogate were interviewed independently. Decision delay time was assessed by assisting participants and surrogates to triangulate the time of symptom onset and time of decision to seek help by placing it in the context of events that they would remember. The intraclass correlation coefficient was used to assess agreement.

RESULTS

Patients were mainly men (81%), married (79%) and ranged in age from 39 to 78 years while surrogates were mostly women (74%) and 55% of them were patients' spouses. Surrogates ranged in age from 18 to 75 years. Intraclass correlation coefficients levels varied across different variables ranging from lack of agreement (p>0.05) to almost perfect agreement with decision delay time having the highest correlation coefficient (86%, p<0.05). Cognitive variables had higher agreement than emotional variables. Significant emotional variables' agreement ranged form 28% to 39% and significant cognitive variables' agreement ranged form 64% to 68%. Female surrogates (n=81) had higher agreement levels with their respective patients than male surrogates (n=28).

CONCLUSIONS

Utilizing surrogates to proxy patients' account of decision delay time and its cognitive predictors is practical and feasible.

Health status and suicide in the second half of life

OBJECTIVE

To examine the associations of suicide in the second half of life with medical and psychiatric illness, functional limitations, and reported use of inpatient, ambulatory, and home health care services.

METHOD

A retrospective case-control design was used to compare 86 people over age 50 years who died by suicide with a comparison group of 86 living community participants that were individually matched on age, gender, race, and county of residence.

RESULTS

Suicide decedents had more Axis I diagnoses, including current mood and anxiety disorders, worse physical health status, and greater impairment in functional capacity. They were more likely to have required psychiatric treatment, medical, or surgical hospitalization in the last year, and visiting nurse or home health aide services. In a multivariate model, the presence of any active Axis I disorder and any impairment in instrumental activities of daily living (IADL) made independent contributions to suicide risk.

CONCLUSIONS

Mental illness, physical illness, and associated functional impairments represent domains of risk for suicide in this age group. In addition to individuals with psychiatric illness, those with severe or comorbid physical illness and functional disability who require inpatient and home care services should be targeted for screening and preventive interventions.

Psychometric properties of the EQ-5D in a study of people with mild to moderate dementia

PURPOSE

Due to their cognitive impairment, the health-related quality of life (HRQoL) of patients with dementia is often rated by proxies. This study aims to analyse the psychometric properties of the EQ-5D applied to patients with mild to moderate dementia and their family caregivers.

METHODS

Three hundred and ninety patients and their caregivers were asked to assess the patients' HRQoL using the EQ-5D. The German population-based time trade-off values were used to calculate utility weights. Acceptance, discriminative ability, construct validity, inter-rater agreement and responsiveness were tested. Factors that could have an impact on inter-rater agreement were analysed using a multivariate regression.

RESULTS

Five per cent of patients did not fill out the EQ-5D. The response rate of caregivers and of patients with mild dementia was higher than that of patients with moderate dementia. There were no floor or ceiling effects. The test results of the caregivers concerning construct validity and responsiveness were better than those of the patients. The inter-rater reliability was not satisfactory either on the dimension level or on the utility score level. Caregivers gave the patients' HRQoL significantly lower ratings than did the patients themselves. Better abilities of the patient to perform activities of daily living and a lower subjective burden of the caregiver were associated with a higher inter-rater agreement.

CONCLUSIONS

The study showed that the EQ-5D is especially applicable to patients with mild dementia and their caregivers as proxies. However, there are important differences between patient and proxy ratings, even in cases of mild dementia, at the dimension level as well as utility score level, which should be considered in the interpretation of quality of life scores.

Spouse-rated vs self-rated health as predictors of mortality

BACKGROUND

The Health and Retirement Study is a national sample of Americans older than 50 years and their spouses. The present study evaluated cross-sectional and longitudinal data from January 2000 through December 2006. The objective of the study was to evaluate the roles of spouse-rated vs self-rated health as predictors of all-cause mortality among adults older than 50 years.

METHODS

A total of 673 dyads of married couples were randomly selected to participate in a Health and Retirement Study module examining spouse-rated health. For each couple, one member was asked to rate his or her overall health status, and his or her spouse was asked to report the partner's overall health status. Mortality data were available through 2006.

RESULTS

Our findings demonstrate that spouse-rated health (area under the curve, 0.75) is as strong a predictor of mortality as self-rated health (area under the curve, 0.73) (chi(2)(1) = 0.36, P = .54). Combining spouse-rated and self-rated health predicts mortality better than using self-rated health alone (area under the curve, 0.77) (chi(2)(1) = 6.72, P = .009).

CONCLUSIONS

Spouse ratings of health are at least as strongly predictive of mortality as self-rated health. This suggests that, when self-rated health is elicited as a prognostic indicator, spouse ratings can be used when self-ratings are unavailable. Both measures together may be more informative than either measure alone.

Late-stage HIV/AIDS patients' and their familial caregivers' agreement on the palliative care outcome scale

This study compares the self-assessments of 67 late-stage HIV/AIDS patients regarding their symptomatology, sense of self-worth, and several other aspects of their health-care situation, to assessments of that situation provided by their informal caregivers. As part of a dyadic study of care preferences, the patients and caregivers independently completed nearly identical versions of the Palliative Care Outcome Scale, a short 10-item measure of the patient's current health, social, and psychological status. The participants in the study were recruited from inpatient and outpatient services at an urban medical center. Substantial or moderate agreement, assessed by weighted kappa, was found between patient and caregiver assessments with regard to only four items assessing physical or emotional states of the patient (pain, other symptoms, anxiety, and life worthwhile). Fair or slight agreement was found for the six remaining items, including those assessing the patient's sense of self-worth, family/friends' anxiety, interactions with family/friends, and practical matters. Mean ratings of self-worth were significantly different for patients and caregivers. These findings underscore the clinical need to assess patient care outcomes directly, and they suggest the importance of facilitating more effective communication about relevant health issues among seriously ill patients, caregivers, and health-care providers.

Is there agreement between Canadian older adults and their primary informal caregivers on behaviour towards institutionalisation?

We aimed to compare behaviour towards institutionalisation between frail older adults and their informal caregivers, and identify correlates of differential behaviour. In 2004, during the fourth wave of the longitudinal Program of Research to Integrate Services for the Maintenance of Autonomy (PRISMA) study (province of Québec, Canada), 86.7% of eligible dyads, that is 593 participants and their primary informal caregivers, were asked separately if they thought about placement, discussed it with someone or visited an institution during the previous year. An ordinal measure of behaviour towards institutional placement was derived and agreement between dyad members was assessed with the weighted kappa. Although identical behaviour was relatively high (65.4%), it represented almost exclusively no thoughts by either member and the weighted kappa was low (0.16). Differential behaviour was then analysed as a three-level dependent variable (thoughts only by the care-receiver, thoughts only by the caregiver, no thoughts by either dyad member) in a multiple multinomial logistic regression analysis. Compared with neither person thinking about it, the care-receiver alone thinking about placement was associated with using voluntary services, receiving help for home maintenance and visits to the emergency room during the previous year, along with the caregiver being aged 70 years or over. Compared with neither person thinking about it, the caregiver alone thinking about placement was associated with being male, not residing with the care-receiver, sensing a higher subjective burden, along with the care-receiver being 85 years or older, not being able to feed him/herself independently and visits to the emergency room during the previous year. Identified correlates can be useful in targeting dyads likely to behave differently. Communication within these dyads needs to be enhanced, as it is crucial to ensure that both parties are comfortable with possible future institutionalisation. In this regard, health professionals could play a role in bringing the issue to discussion.

Correspondence of perceptions about centenarians' mental health

OBJECTIVES

The goals of this study were to uncover the criteria by which centenarians, proxy/caregivers, and interviewers rated centenarians' mental health. Often proxy and interviewer reports are obtained in studies of the oldest-old and become a primary source of information.

METHODS

Data were from a population-based sample of mentally competent US centenarians in northern Georgia. The dependent variables were based on alternative reports for the centenarians' mental or emotional health. Regression analysis was used to predict each source's rating of mental health separately with the same set of variables. These variables included information obtained from the centenarians and proxies about their distal experiences, demographics, and proximal resources including Mini-Mental Status Examination (MMSE), health, personality, socioeconomic resources, and coping behaviors.

RESULTS

Examination of mean-level differences between sources revealed similarity across mental health ratings. For centenarians and proxies, perceived economic status was a very important predictor of mental health. For centenarians and interviewers, personality (neuroticism and extraversion) was an important common predictor. The interviewer and proxy mental health ratings were strongly associated with MMSE, but that was not the case for centenarians.

CONCLUSION

Mean-level findings and the comparative regression results provide corroborating evidence that centenarians' self-reports of mental health are similar based on average ratings and presence of common associations with other raters (i.e., perceived economic status and personality). Implications of differences across rater pairs are discussed as guidance about the comparative value of substitution of proxies as informants for addressing specific influences on mental health.

Social communication skills in persons with post-acute traumatic brain injury: Three perspectives

OBJECTIVE

To describe social communication skills problems identified by individuals with traumatic brain injury (TBI) compared to significant other (SO) and clinician ratings; and associations between these skills and participation outcome measures.

DESIGN

Cohort study.

METHODS

Sixty individuals with TBI > or = 1 year post-injury were administered measures of social communication, societal participation, social integration and life satisfaction. Clinicians and SOs rated the social communication skills of the subjects.

RESULTS

Subjects were able to identify social communication skills problems, associated with lower ratings of community integration and satisfaction with life. Males reported higher scores in social communication and social integration than females. SOs and clinicians identified more social skills problems than subjects.

CONCLUSIONS

Persons with TBI experience social communication skills deficits, associated with decreased societal participation and life satisfaction. Further research is needed to determine efficacy of social communication skills treatment and association with improved participation and satisfaction with life.

Depression, disability and intermediate pathways: a review of longitudinal studies in elders

Cross-sectional studies demonstrate depression is associated with disability in elders. These studies also report that disability in depressed elders is associated with greater medical illness burden, cognitive impairment, and behavioral changes. Only longitudinal studies, however, can determine the impact of depression and its comorbidities on functional decline. This review summarizes the findings of 20 longitudinal studies examining the relationship between baseline or incident depression and functional decline. However, the mediational effects of potential risk factors identified by cross-sectional studies cannot be derived from the current literature. We propose a mediational effects model for future longitudinal studies, incorporating measures sensitive to both mood symptoms and the medical, cognitive, and behavioral comorbidities of depression to better understand the impact of each on functional decline and to focus future clinical interventions.

Pain and depression in caregivers affected their perception of pain in stroke patients

OBJECTIVES

Informal caregivers often serve as proxy raters of Health-Related Quality of Life (HRQL) when patients cannot report on their own behalf. Caregiver depression has been associated with bias in proxy ratings, but few studies have examined the role of caregiver pain. The aim of this study was to determine if caregiver depressive symptoms and/or pain systematically affected patient-proxy agreement on patient HRQL after stroke.

STUDY DESIGN AND SETTINGS

Secondary data analysis of 95 stroke patients and their caregivers (dyads) at 6 months poststroke. Caregiver depressive symptoms were measured by Center for Epidemiologic Studies Depression Rating Scale, and pain was measured using EQ-5D. Using multivariate regression, we examined the effect of caregiver depressive symptoms and pain on patient-proxy difference scores on Health Utilities Index 3 (HUI3) attributes and Short Form-36 domains of vitality and social functioning.

RESULTS

Caregiver depressive symptoms and pain were associated with significant differences in patient-proxy scores on HUI3 pain (P<0.05). Depressed caregivers underestimated pain experienced by patients, and caregivers with pain overestimated patient pain. Additionally, an interaction between caregiver depressive symptoms and pain was identified.

CONCLUSION

Presence of pain and depressive symptoms in caregivers can significantly affect perceptions of pain in stroke patients. Results suggest that caregivers with pain and/or depression may provide more biased proxy assessments of pain.

Determinants of short and long term functional recovery after hospitalization for community-acquired pneumonia in the elderly: role of inflammatory markers

Background

Hospitalization for older patients with community-acquired pneumonia (CAP) is associated with functional decline. Little is know about the relationship between inflammatory markers and determinants of functional status in this population. The aim of the study is to investigate the association between tumor necrosis factor (TNF)-α, C-reactive protein (CRP) and Activities of Daily Living, and to identify risk factors associated with one year mortality or hospital readmission.

Methods

301 consecutive patients hospitalized for CAP (mean age 73.9 ± 5.3 years) in a University affiliated hospital over 18 month period were included. All patients were evaluated on admission to identify baseline demographic, microbiological, cognitive and functional characteristics. Serum levels for TNF-α and CRP were collected at the same time. Reassessment of functional status at discharge, and monthly thereafter till 3 months post discharge was obtained and compared with preadmission level to document loss or recovery of functionality. Outcome was assessed by the composite endpoint of hospital readmission or death from any cause up to one year post hospital discharge.

Results

36% of patients developed functional decline at discharge and 11% had persistent functional impairment at 3 months. Serum TNF-α (odds ratio [OR] 1.12, 95% CI 1.08–1.15; p < 0.001) and the Charlson Index (OR = 1.39, 95% CI 1.14 to 1.71; p = 0.001) but not age, CRP, or cognitive status were independently associated with loss of functionality at the time of hospital discharge. Lack of recovery in functional status at 3 months was associated with impaired cognitive ability and preadmission comorbidities. In Cox regression analysis, persistent functional impairment at 3 months, impaired cognitive function, and the Charlson Index were highly predictive of one year hospital readmission or death.

Conclusion

Serum TNF-α levels can be useful in determining patients at risk for functional impairment following hospitalization from CAP. Old patients with impaired cognitive function and preexisting comorbidities who exhibit delay in functional recovery at 3 months post discharge may be at high risk for hospital readmission and death. With the scarcity of resources, a future risk stratification system based on these findings might be proven helpful to target older patients who are likely to benefit from interventional strategies.

A percepção de qualidade de vida do idoso avaliada por si próprio e pelo cuidador

O objetivo deste estudo foi investigar a relação entre a percepção de qualidade de vida (QV) do idoso por ele próprio e por seu cuidador. Assim, 27 pares de idosos-e-cuidadores foram avaliados. Os idosos foram convidados a responder sobre condições sociodemográficas, QV (WHOQOL-100) e sintomatologia depressiva (BDI). Os cuidadores responderam os mesmos itens com relação a sua própria pessoa e também o WHOQOL-100 adaptado. Os dados mostraram uma tendência de o cuidador apresentar pior percepção de QV do idoso do que o próprio idoso cuidado. Apesar disso, observou-se concordância nos resultados de QV percebidos pelo idoso e na opinião do cuidador sobre a QV do idoso nos domínios físico, nível de independência, meio ambiente e espiritualidade/religião. A intensidade de depressão do idoso exerceu forte influência tanto na sua própria percepção de QV quanto na percepção do cuidador.

Driving status and risk of entry into long-term care in older adults

OBJECTIVES

Given the importance of driving in American society, older non-drivers may be unable to meet basic needs while living independently. We assessed whether not driving is an independent risk factor for entering long-term care (LTC) institutions.

METHODS

Data were used from 1593 older adults who participated in the Salisbury Eye Evaluation cohort study and completed an additional telephone survey. Questions on driving status and LTC entry were obtained by self/proxy report. Cox time-dependent regression procedures were used to adjust for demographic and health factors.

RESULTS

Former and never drivers had higher hazards of LTC entry after adjustment for demographic and health variables (hazard ratio [HR]=4.85; 95% confidence interval [CI]=3.26, 7.21; and HR=3.53; 95% CI=1.89, 6.58, respectively). Also, having no other drivers in the house was an independent risk factor for LTC entry (HR=1.72; 95% CI=1.15, 2.57).Discussion. Older adults are expected to make good decisions about when to stop driving, but the hardships imposed on older adults by not driving are not widely recognized. Innovative strategies to improve transportation options for older adults should be considered.