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Lin YC, Lin HY, Chen LK, Hsiao FY. Unveiling the multifaceted nexus of subjective aging, biological aging, and chronological age: Findings from a nationally representative cohort study. Arch Gerontol Geriatr 2024; 117:105164. [PMID: 37708578 DOI: 10.1016/j.archger.2023.105164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/31/2023] [Accepted: 08/18/2023] [Indexed: 09/16/2023]
Abstract
OBJECTIVES This study aims to investigate how subjective aging influences the psychological and behavioral responses of older individuals, specifically focusing on the associations between subjective aging and longitudinal changes in biological age. METHODS This is a retrospective cohort study retrieving data from the Taiwan Longitudinal Study on Aging (TLSA), over a 4-year follow-up period. Subjective aging is assessed by asking participants if they perceive themselves as old, while frailty is measured using a frailty index comprising 34 deficits from various domains. Participants are categorized into three groups based on their chronological age. The association between subjective aging and transition of biological age (as indicated by an increased frailty index) from 2011 to 2015 is examined using logistic regression models. RESULTS The study consisted of 2412 participants, who were categorized into middle-age (n = 1,082), young-old (n = 779), and old-old (n = 551) groups. Among them, individuals exhibiting subjective aging at baseline were more likely to be older in chronological age, female, illiterate, and unemployed, compared to those without subjective aging. The adjusted odds ratios (aORs) for the association between subjective aging and an increased biological age were 1.72 [95% CI: 0.88-3.34], 1.61 [0.77-3.37], and 1.08 [0.65-1.80], in the middle-age, young-old, and old-old groups, respectively. DISCUSSIONS No significant associations were found between changes in biological age and subjective aging across various chronological age groups. Notably, within the younger age group, a discernible trend towards an association was observed, indicating the potential age-related nuances in the complex interrelation between subjective age, biological aging, and chronological aging.
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Affiliation(s)
- Yi-Chin Lin
- Graduate Institute of Clinical Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hung-Yu Lin
- Graduate Institute of Clinical Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Liang-Kung Chen
- Center for Geriatrics and Gerontology, Taipei Veterans General Hospital, Taipei, Taiwan; Center for Healthy Longevity and Aging Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan; Taipei Municipal Gan-Dau Hospital (Managed by Taipei Veterans General Hospital), Taipei, Taiwan.
| | - Fei-Yuan Hsiao
- Graduate Institute of Clinical Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan; School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Pharmacy, National Taiwan University Hospital, Taipei, Taiwan.
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Cai H, Zhuge L, Huang Z, Wang S, Shi P, Yan D, Niu L, Li Z. Distinct risk factors of lateral lymph node metastasis in patients with papillary thyroid cancer based on age stratification. BMC Surg 2024; 24:24. [PMID: 38218911 PMCID: PMC10787958 DOI: 10.1186/s12893-024-02309-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 01/01/2024] [Indexed: 01/15/2024] Open
Abstract
INTRODUCTION Studies have revealed that age is associated with the risk of lateral lymph node metastasis (LLNM) in papillary thyroid cancer (PTC). This study aimed to identify the optimal cut point of age for a more precise prediction model of LLNM and to reveal differences in risk factors between patients of distinct age stages. METHODS A total of 499 patients who had undergone thyroidectomy and lateral neck dissection (LND) for PTC were enrolled. The locally weighted scatterplot smoothing (LOWESS) curve and the 'changepoint' package were used to identify the optimal age cut point using R. Multivariate logistic regression analysis was performed to identify independent risk factors of LLNM in each group divided by age. RESULTS Younger patients were more likely to have LLNM, and the optimal cut points of age to stratify the risk of LLNM were 30 and 45 years old. Central lymph node metastasis (CLNM) was a prominent risk factor for further LNM in all patients. Apart from CLNM, sex(p = 0.033), tumor size(p = 0.027), and tumor location(p = 0.020) were independent predictors for patients younger than 30 years old; tumor location(p = 0.013), extra-thyroidal extension(p < 0.001), and extra-nodal extension(p = 0.042) were independent risk factors for patients older than 45 years old. CONCLUSIONS Our study could be interpreted as an implication for a change in surgical management. LND should be more actively performed when CLNM is confirmed; for younger patients with tumors in the upper lobe and older patients with extra-thyroidal extension tumors, more aggressive detection of the lateral neck might be considered.
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Affiliation(s)
- Huizhu Cai
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lingdun Zhuge
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zehao Huang
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shixu Wang
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ping Shi
- Department of ENT, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, China
| | - Dangui Yan
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lijuan Niu
- Department of Ultrasound, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Zhengjiang Li
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Chen M, Ataga KI, Hankins JS, Zhang M, Gatwood JD, Wan JY, Bailey JE. Age-related differences in risks and outcomes of 30-day readmission in adults with sickle cell disease. Ann Hematol 2023; 102:2329-2342. [PMID: 37450055 DOI: 10.1007/s00277-023-05365-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/09/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Literature on 30-day readmission in adults with sickle cell disease (SCD) is limited. This study examined the overall and age-stratified rates, risk factors, and healthcare resource utilization associated with 30-day readmission in this population. METHODS Using the Nationwide Readmissions Database, a retrospective cohort study was conducted to identify adult patients (aged ≥ 18) with SCD in 2016. Patients were stratified by age and followed for 30 days to assess readmission following an index discharge. The primary outcome was 30-day unplanned all-cause readmission. Secondary outcomes included index hospitalization costs and readmission outcomes (e.g., time to readmission, readmission costs, and readmission lengths of stay). Separate generalized linear mixed models estimated the adjusted odds ratios (aORs) for associations of readmission with patient and hospital characteristics, overall and by age. RESULTS Of 15,167 adults with SCD, 2,863 (18.9%) experienced readmission. Both the rates and odds of readmission decreased with increasing age. The SCD complications vaso-occlusive crisis and end-stage renal disease (ESRD) were significantly associated with increased likelihood of readmission (p < 0.05). Age-stratified analyses demonstrated that diagnosis of depression significantly increased risk of readmission among patients aged 18-to-29 years (aOR = 1.537, 95%CI: 1.215-1.945) but not among patients of other ages. All secondary outcomes significantly differed by age (p < 0.05). CONCLUSION This study demonstrates that patients with SCD are at very high risk of 30-day readmission and that younger adults and those with vaso-occlusive crisis and ESRD are among those at highest risk. Multifaceted, age-specific interventions targeting individuals with SCD on disease management are needed to prevent readmissions.
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Affiliation(s)
- Ming Chen
- Institute of Health Outcomes and Policy, University of Tennessee Health Science Center, Memphis, TN, 38163, USA.
- Center for Health System Improvement, University of Tennessee Health Science Center, Memphis, TN, 38163, USA.
| | - Kenneth I Ataga
- Center for Sickle Cell Disease, University of Tennessee Health Science Center, Memphis, TN, USA
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Jane S Hankins
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
- Department of Global Pediatric Medicine, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Min Zhang
- Department of Biostatistics, University of Michigan, Ann Arbor, MI, USA
| | - Justin D Gatwood
- Institute of Health Outcomes and Policy, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
- Department of Clinical Pharmacy and Translational Science, University of Tennessee Health Science Center, Nashville, TN, USA
| | - Jim Y Wan
- Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - James E Bailey
- Center for Health System Improvement, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
- Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
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Tang M, Su N, Zhang D, Dai Y, Yao M, Zhou L, Cui L, Zhang S, Zhu Y, Ni J. The Differential Effects of Apoeɛ4 on Cerebral Volumetric Structures in Different Lifespan in Community-Dwelling Populations. J Alzheimers Dis 2023; 92:691-700. [PMID: 36776052 DOI: 10.3233/jad-220834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
BACKGROUND Apolipoprotein E (APOE) is closely related to Alzheimer's disease and other age-related diseases. In recent years, several studies have shown an interaction of APOE by age on brain volume. However, validation in larger cohorts is required. OBJECTIVE We explored the age-related effect of APOE on brain volumes in a community-dwelling cohort. METHODS Inhabitants in Shunyi District in Beijing aged≥35 years were invited to join this study from 2013 to 2016. The baseline assessments, APOE genotyping and brain magnetic resonance imaging were performed. Neuroimaging small vessel disease characteristics and brain volumes (global measures, cerebral lobes, hippocampus, brainstem, and subcortical nuclei) were acquired. The general linear model was used to analyze the interaction of APOE genotypes by age on brain volumes, and the age of 60 years was chosen as a cut-off value for stratification analysis. RESULTS A total of 1,105 subjects were enrolled in the final analysis with a mean age of 56.18 (9.30) years, and 37.7% were men. APOEɛ3/ɛ3 carriers account for 71.8%, ɛ2 (+) 14.0%, and ɛ4 (+) 14.2%. Compared with APOEɛ3/ɛ3, a significant protective effect for APOEɛ4 (+) on brain parenchyma fraction (β = 0.450, p = 0.048) was observed in subjects aged≤60 years; in participants aged > 60 years, a negative effect for APOEɛ4 (+) on hippocampus (β = 1.087, p = 0.021) was found. CONCLUSION Our study reveals that APOEɛ4 has differential effects on cerebral structures in different stages of lifespan, suggesting its complicated biological function and underlying antagonistic pleiotropy.
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Affiliation(s)
- Mingyu Tang
- Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ning Su
- Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dingding Zhang
- Medical Research Center, State Key laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yi Dai
- Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ming Yao
- Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lixin Zhou
- Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Liying Cui
- Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shuyang Zhang
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yicheng Zhu
- Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jun Ni
- Department of Neurology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Ma B, Chen X, Zhao Z, Yin X, Ji Q, Zhou Y, Ma C, Wang J. Coexisting CLT in PTC is an independent predictor of tumor aggressiveness for patients aged under 55: a retrospective analysis of 635 patients. BMC Endocr Disord 2022; 22:55. [PMID: 35255870 PMCID: PMC8900407 DOI: 10.1186/s12902-022-00945-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 01/22/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The study was aimed at investigating the potential role of chronic lymphocytic thyroiditis (CLT) in papillary thyroid cancer (PTC) aggressiveness for patients aged below 55, as well as to figure out factors influencing potential recurrence risk in different age groups. METHODS A total of 635 adult patients were retrospectively analyzed. 188 patients were diagnosed with coexistent CLT and the remaining 447 were classified as non-CLT. Then the characteristics of CLT-coexisted patients and non-CLT ones were compared respectively when patients were aged ≥ 55 years or below. The association among postoperative clinicopathological features were also analyzed using multivariate regression. In addition, the prognostic value of several variables relating to high-risk recurrence were estimated within different age groups. RESULTS When divided in two age groups (55 years as the borderline), non-CLT group (aged below 55 years) had a remarkable frequency of small size lesion (Dmax ≤ 1 cm) compared with CLT-coexisted patients (54.6% to 43.0%, p = 0.02). In addition, non-CLT patients tended to have intrathyroidal extension as opposed to those with coexistent CLT (20.2% to 28.2%, p = 0.05). In multivariate analysis, CLT still significantly acted as an independent risk factor of greater lesion size (Dmin > 1 cm) (OR = 1.7, p = 0.02) and mildly promoted gross extrathyroidal extension (ETE) (OR = 1.4, p = 0.06). However, associations didn't emerge in the characteristics mentioned above with CLT when patients were ≥ 55 years old. The prognostic value of CLT in high-risk recurrence was evident only in patients aged 35-44 years. (OR = 2.4, 95%CI:1.2-5.4, p = 0.02). Greater lesion size independently promoted gross ETE, no matter patients were aged above 55 years or not. Its prognostic value of high-risk recurrence was significant throughout all age groups. CONCLUSION These findings revealed that CLT coexistence might be the unfavorable factor of PTC aggressiveness in patients aged below 55 years. Its role as well as greater tumor size may potentially predict higher recurrence risk according to results figured out in the prediction model.
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Affiliation(s)
- Bing'e Ma
- Department of Thyroid and Breast Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
- Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, China
| | - Xiyi Chen
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, 210029, China
| | - Zhengping Zhao
- Department of Thyroid and Breast Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
- Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, China
| | - Xiaoyang Yin
- The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Qin Ji
- The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yifan Zhou
- The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Chaoqun Ma
- Department of General Surgery, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China.
| | - Jianhua Wang
- Department of Thyroid and Breast Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China.
- Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, China.
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Fields R, Humphrey L, Flynn-Primrose D, Mohammadi Z, Nahirniak M, Thommes E, Cojocaru M. Age-stratified transmission model of COVID-19 in Ontario with human mobility during pandemic's first wave. Heliyon 2021; 7:e07905. [PMID: 34514179 PMCID: PMC8419869 DOI: 10.1016/j.heliyon.2021.e07905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 04/10/2021] [Accepted: 08/27/2021] [Indexed: 12/15/2022] Open
Abstract
In this work, we employ a data-fitted compartmental model to visualize the progression and behavioral response to COVID-19 that match provincial case data in Ontario, Canada from February to June of 2020. This is a "rear-view mirror" glance at how this region has responded to the 1st wave of the pandemic, when testing was sparse and NPI measures were the only remedy to stave off the pandemic. We use an SEIR-type model with age-stratified subpopulations and their corresponding contact rates and asymptomatic rates in order to incorporate heterogeneity in our population and to calibrate the time-dependent reduction of Ontario-specific contact rates to reflect intervention measures in the province throughout lockdown and various stages of social-distancing measures. Cellphone mobility data taken from Google, combining several mobility categories, allows us to investigate the effects of mobility reduction and other NPI measures on the evolution of the pandemic. Of interest here is our quantification of the effectiveness of Ontario's response to COVID-19 before and after provincial measures and our conclusion that the sharp decrease in mobility has had a pronounced effect in the first few weeks of the lockdown, while its effect is harder to infer once other NPI measures took hold.
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Affiliation(s)
- R. Fields
- Department of Mathematics and Statistics, University of Guelph, Canada
| | - L. Humphrey
- Department of Mathematics and Statistics, University of Guelph, Canada
| | - D. Flynn-Primrose
- Department of Mathematics and Statistics, University of Guelph, Canada
| | - Z. Mohammadi
- Department of Mathematics and Statistics, University of Guelph, Canada
| | - M. Nahirniak
- Department of Mathematics and Statistics, University of Guelph, Canada
| | | | - M.G. Cojocaru
- Department of Mathematics and Statistics, University of Guelph, Canada
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Johnson C, Kumwenda M, Meghji J, Choko AT, Phiri M, Hatzold K, Baggaley R, Taegtmeyer M, Terris-Prestholt F, Desmond N, Corbett EL. 'Too old to test?': A life course approach to HIV-related risk and self-testing among midlife-older adults in Malawi. BMC Public Health 2021; 21:650. [PMID: 33812381 PMCID: PMC8019342 DOI: 10.1186/s12889-021-10573-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 03/07/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Despite the aging HIV epidemic, increasing age can be associated with hesitancy to test. Addressing this gap is a critical policy concern and highlights the urgent need to identify the underlying factors, to improve knowledge of HIV-related risks as well as uptake of HIV testing and prevention services, in midlife-older adults. METHODS We conducted five focus group discussions and 12 in-depth interviews between April 2013 and November 2016 among rural and urban Malawian midlife-older (≥30 years) men and women. Using a life-course theoretical framework we explored how age is enacted socially and its implications on HIV testing and sexual risk behaviours. We also explore the potential for HIV self-testing (HIVST) to be part of a broader strategy for engaging midlife-older adults in HIV testing, prevention and care. Thematic analysis was used to identify recurrent themes and variations. RESULTS Midlife-older adults (30-74 years of age) associated their age with respectability and identified HIV as "a disease of youth" that would not affect them, with age protecting them against infidelity and sexual risk-taking. HIV testing was felt to be stigmatizing, challenging age norms, threatening social status, and implying "lack of wisdom". These norms drove self-testing preferences at home or other locations deemed age and gender appropriate. Awareness of the potential for long-standing undiagnosed HIV to be carried forward from past relationships was minimal, as was understanding of treatment-as-prevention. These norms led to HIV testing being perceived as a threat to status by older adults, contributing to low levels of recent HIV testing compared to younger adults. CONCLUSIONS Characteristics associated with age-gender norms and social position encourage self-testing but drive poor HIV-risk perception and unacceptability of conventional HIV testing in midlife-older adults. There is an urgent need to provide targeted messages and services more appropriate to midlife-older adults in sub-Saharan Africa. HIVST which has often been highlighted as a tool for reaching young people, may be a valuable tool for engaging midlife-older age groups who may not otherwise test.
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Affiliation(s)
- Cheryl Johnson
- Global of HIV, Hepatitis and STIs Programmes, World Health Organization, 20 Ave Appia, 1211, Geneva, Switzerland. .,Department of Clinical Research and Infectious Disease, London School of Hygiene and Tropical Medicine, London, UK.
| | - Moses Kumwenda
- Malawi Liverpool Wellcome Trust, HIV/TB Group, Blantyre, Malawi.,Helse Nord TB Initiative, College of Medicine, Blantyre, Malawi
| | - Jamilah Meghji
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Augustine T Choko
- Department of Clinical Research and Infectious Disease, London School of Hygiene and Tropical Medicine, London, UK.,Malawi Liverpool Wellcome Trust, HIV/TB Group, Blantyre, Malawi
| | | | - Karin Hatzold
- Population Services International, Johannesburg, South Africa
| | - Rachel Baggaley
- Global of HIV, Hepatitis and STIs Programmes, World Health Organization, 20 Ave Appia, 1211, Geneva, Switzerland
| | - Miriam Taegtmeyer
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK.,Tropical Infectious Diseases Unit, Royal Liverpool University Hospital, Liverpool, UK
| | - Fern Terris-Prestholt
- Department of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Nicola Desmond
- Malawi Liverpool Wellcome Trust, HIV/TB Group, Blantyre, Malawi.,Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Elizabeth L Corbett
- Department of Clinical Research and Infectious Disease, London School of Hygiene and Tropical Medicine, London, UK.,Malawi Liverpool Wellcome Trust, HIV/TB Group, Blantyre, Malawi
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Zhu Y, Edwards D, Mant J, Payne RA, Kiddle S. Characteristics, service use and mortality of clusters of multimorbid patients in England: a population-based study. BMC Med 2020; 18:78. [PMID: 32272927 PMCID: PMC7147068 DOI: 10.1186/s12916-020-01543-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/26/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Multimorbidity is associated with mortality and service use, with specific types of multimorbidity having differential effects. Additionally, multimorbidity is often negatively associated with participation in research cohorts. Therefore, we set out to identify clusters of multimorbidity patients and how they are differentially associated with mortality and service use across age groups in a population-representative sample. METHODS Linked primary and secondary care electronic health records contributed by 382 general practices in England to the Clinical Practice Research Datalink (CPRD) were used. The study included a representative set of multimorbid adults (18 years old or more, N = 113,211) with two or more long-term conditions (a total of 38 conditions were included). A random set of 80% of the multimorbid patients (N = 90,571) were stratified by age groups and clustered using latent class analysis. Consistency between obtained multimorbidity phenotypes, classification quality and associations with demographic characteristics and primary outcomes (GP consultations, hospitalisations, regular medications and mortality) was validated in the remaining 20% of multimorbid patients (N = 22,640). RESULTS We identified 20 patient clusters across four age strata. The clusters with the highest mortality comprised psychoactive substance and alcohol misuse (aged 18-64); coronary heart disease, depression and pain (aged 65-84); and coronary heart disease, heart failure and atrial fibrillation (aged 85+). The clusters with the highest service use coincided with those with the highest mortality for people aged over 65. For people aged 18-64, the cluster with the highest service use comprised depression, anxiety and pain. The majority of 85+-year-old multimorbid patients belonged to the cluster with the lowest service use and mortality for that age range. Pain featured in 13 clusters. CONCLUSIONS This work has highlighted patterns of multimorbidity that have implications for health services. These include the importance of psychoactive substance and alcohol misuse in people under the age of 65, of co-morbid depression and coronary heart disease in people aged 65-84 and of cardiovascular disease in people aged 85+.
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Affiliation(s)
- Yajing Zhu
- MRC Biostatistics Unit, University of Cambridge, Cambridge, CB2 0SR, UK.
| | - Duncan Edwards
- Department of Public Health and Primary Care, Strangeways Research Laboratory, University of Cambridge, Worts' Causeway, Cambridge, CB1 8RN, UK
| | - Jonathan Mant
- Department of Public Health and Primary Care, Strangeways Research Laboratory, University of Cambridge, Worts' Causeway, Cambridge, CB1 8RN, UK
| | - Rupert A Payne
- Centre for Academic Primary Care, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, BS8 2PS, UK
| | - Steven Kiddle
- MRC Biostatistics Unit, University of Cambridge, Cambridge, CB2 0SR, UK
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Kato Y, Hayashi T, Tanahashi N, Kobayashi S; Japan Standard Stroke Registry Study Group. Cardioembolic stroke is the most serious problem in the aging society: Japan standard stroke registry study. J Stroke Cerebrovasc Dis 2015; 24:811-4. [PMID: 25680659 DOI: 10.1016/j.jstrokecerebrovasdis.2014.11.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 11/19/2014] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Japan has the fastest aging society in the world. Older patients have a different stroke risk profile and different stroke features compared with younger patients. The aim of the present study was to examine the stroke subtypes, risk factor profiles, stroke severities, and functional outcomes in the different age groups. METHODS A total of 78,096 patients with acute ischemic stroke, including transient ischemic attacks, were included in a multicenter, hospital-based registration study based on a computerized database involving 95 Japanese institutes between 2000 and 2012. RESULTS The frequency of atrial fibrillation increased even after the age of 90 years; consequently, the proportion of patients experiencing cardioembolic stroke also increased in the same age group. Furthermore, more severe symptoms on arrival and worse functional outcomes were observed with increasing age. The frequency of hypertension increased with age, peaking in patients in their 70s, and decreasing slightly thereafter. The frequency of diabetes mellitus and hyperlipidemia peaked in patients in their 50s or 60s and gradually decreased thereafter. CONCLUSION The findings of the present study suggest that in the currently aging society, cardioembolic stroke is the most important stroke subtype. The roles of hypertension, diabetes mellitus, and hyperlipidemia are greatest in stroke patients in their 50s to 60s. In older patients, the role of atrial fibrillation is more significant.
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Abstract
Time is central to the study of aging, but multiple dimensions of time, especially its subjective sense, merit more systematic attention in gerontology. This essay honors the intellectual legacy of Karl Mannheim, Bernice Neugarten, Matilda Riley, and others for drawing attention to the social dimensions of time relevant for the scientific study of aging. I summarize major contributions of these social scientists for the study of aging and note points of overlap and distinction. Although their writings have led gerontologists to think more systematically about life course timing and trajectories, there is relatively little empirical research on temporal perceptions in such trajectories and the interplay of objective and subjective elements of time.
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Affiliation(s)
- Kenneth F Ferraro
- *Address correspondence to Kenneth F. Ferraro, Center on Aging and the Life Course, Purdue University, Hanley Hall, 1202W. State Street, West Lafayette, IN 47907-2055. E-mail:
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