scholarly journals Cognitive Decline and Retirement: Findings From the Canadian Longitudinal Study on Aging

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 971-971
Author(s):  
Catherine Gosselin ◽  
Benjamin Boller ◽  
Meghan Désilets-Jutras

Abstract Since increasing life expectancy leads to a longer period of retirement, several studies have been investigating the possible impact of retirement on cognitive health. Several epidemiological studies with cross-sectional designs have reported a negative association between retirement and cognitive capacities. However, very few studies with longitudinal designs have confirmed the negative effect of retirement on cognitive functioning. The present study was conducted to investigate the impact of retirement on cognitive capacities among older Canadians. We used data from the Comprehensive cohort of the Canadian Longitudinal Study on Aging (CLSA) to compare performance retirees and workers (N = 1442), 45 to 85 years of age at baseline. Memory and executive functioning were assessed using standardized assessment tools at baseline and at three-year follow up. Retirees and workers were matched for age, gender and education using the nearest neighbor propensity score method with a caliper of 0.02. Mixed ANOVA and post hoc analyses were conducted separately for the English- and French-speaking samples. Results for the English-speaking sample showed a significant decline on both the Stroop and the Mental Alternation Task for retirees compared to workers from baseline to follow-up. These results support previous cross-sectional studies that have demonstrated a negative effect of retirement on executive functioning. The absence of significant results in the French-speaking sample will be discussed in terms of sample size and professional occupation.

2013 ◽  
Vol 23 (1) ◽  
pp. 71-84 ◽  
Author(s):  
M. Fornells-Ambrojo ◽  
T. Craig ◽  
P. Garety

Aims.Occupational functioning is severely impaired in people with psychosis. Social cognition has recently been found to be a stronger predictor of functioning than neurocognition. This study is the first to investigate if externalizing attributional biases that are typically associated with psychosis play a role in the vocational pathways of people with early psychosis.Methods.A cross-sectional design was used. Fifty participants with early psychosis were recruited from a cohort of 144 participants of the Lambeth Early Onset randomized control trial at 18-month follow-up. Information on occupational functioning was obtained using case notes and interview. Severity of symptoms was assessed and participants completed measures on attributional style and executive functioning.Results.Although executive functioning and positive symptoms were associated with poor occupational functioning, an externalizing attributional style for failures and reduced engagement in occupational activities during the previous 18 months emerged as the only predictors of poor occupational functioning at 18-month follow-up.Conclusions.An externalizing attributional bias is associated with poor occupational functioning. Further research is needed to investigate the direction of this relationship and whether attributional biases mediate the impact of symptoms and cognitive impairment on functioning.


Author(s):  
Daniel Nettle ◽  
Shahinaz M Gadalla ◽  
Tsung-Po Lai ◽  
Ezra Susser ◽  
Melissa Bateson ◽  
...  

Abstract Researchers increasingly wish to test hypotheses concerning the impact of environmental or disease exposures on telomere length (TL), and use longitudinal study designs to do so. In population studies, TL is usually measured using a quantitative polymerase chain reaction (qPCR)-based method. This method has been validated by presenting a correlation with a gold standard method such as Southern blotting (SB) in cross-sectional datasets. However, in a cross-section, the range of true variation in TL is large, and measurement error is introduced only once. In a longitudinal study, the target variation of interest is small, and measurement error is introduced both at baseline and follow-up. We present a small dataset (n = 20) where leukocyte TL was measured 6.6 years apart by both qPCR and SB. The cross-sectional correlations between qPCR and SB were high both at baseline (r = 0.90) and follow-up (r = 0.85), yet their correlation for TL change was poor (r = 0.48). Moreover, the qPCR but not SB data showed strong signatures of measurement error. Through simulation, we show that the statistical power gain from performing a longitudinal analysis is much greater for SB than qPCR. We discuss implications for optimal study design and analysis.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lei Huang ◽  
Angela Pei-Chen Fan ◽  
Na Su ◽  
Jessica Thai ◽  
Russell Olive Kosik ◽  
...  

Abstract Background Critical thinking (CT) is an essential competency for medical students. This study’s aim was to evaluate Chinese medical students’ disposition for CT and to explore the impact of current trends in medical education on students’ CT development. Methods We used multistage stratified cluster sampling to recruit a total of 1241 medical students among five different years of training and from three medical institutions in China. The Critical Thinking Disposition Inventory-Chinese Version (CTDI-CV) and self-reported information were used to collect cross-sectional data. Based on the data from the CTDI-CV, 112 medical students in clinical course training from a single institution continued one-year follow-up. Their one-year CTDI-CV score changes were collected regarding various medical education variables. Results The mean CTDI-CV score of the 1241 medical students was 287.04 with 729 (58.7%) students receiving a score of 280 or higher. There were statistically significant differences in schools attended(F = 3.84, P < 0.05), year of school attended(F = 10.32, P < 0.001), GPA(F = 6.32, P < 0.01), weekly time spent learning after class(F = 14.14, P < 0.001), attitude toward medicine(F = 28.93, P < 0.001), desire to be a doctor after graduation(t = − 3.35, P < 0.001), familiarity with CT(F = 20.40, P < 0.001), and perception of importance of CT(F = 22.25, P < 0.001). The participants scored the highest on the CTDI-CV subscales of “inquisitiveness” and the lowest on “truth seeking.” The 112 students in the longitudinal study had significantly lower total CT scores after one academic year follow-up. Conclusions Chinese medical students generally exhibited positive CT dispositions. The cross-sectional survey and one-year longitudinal study indicated that students’ CT disposition diminished as they progressed through traditional medical training. Our study contributes to understanding the status of Chinese medical education of and influential factors on medical students’ CT disposition.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lars Lind ◽  
Johan Sundström ◽  
Johan Ärnlöv ◽  
Ulf Risérus ◽  
Erik Lampa

AbstractThe impact of most, but not all, cardiovascular risk factors decline by age. We investigated how the metabolic syndrome (MetS) was related to cardiovascular disease (CVD) during 40 years follow-up in the Uppsala Longitudinal Study of Adult Men (ULSAM, 2,123 men all aged 50 at baseline with reinvestigations at age 60, 70, 77 and 82). The strength of MetS as a risk factor of incident combined end-point of three outcomes (CVD) declined with ageing, as well as for myocardial infarction, ischemic stroke and heart failure when analysed separately. For CVD, the risk ratio declined from 2.77 (95% CI 1.90–4.05) at age 50 to 1.30 (95% CI 1.05–1.60) at age 82. In conclusion, the strength of MetS as a risk factor of incident CVD declined with age. Since MetS was significantly related to incident CVD also at old age, our findings suggest that the occurrence of MetS in the elderly should not be regarded as innocent. However, since our data were derived in an observational study, any impact of MetS in the elderly needs to be verified in a randomized clinical intervention trial.


2021 ◽  
pp. 1-10
Author(s):  
Che-Chia Chang ◽  
Chi-Shin Wu ◽  
Han-Yun Tseng ◽  
Chun-Yi Lee ◽  
I-Chien Wu ◽  
...  

ABSTRACT Objectives: To estimate the risks of depressive symptoms for developing frailty, accounting for baseline robust or pre-frailty status. Design: An incident cohort study design. Setting: Community dwellers aged 55 years and above from urban and rural areas in seven regions in Taiwan. Participants: A total of 2,717 participants from the Healthy Aging Longitudinal Study in Taiwan (HALST) were included. Subjects with frailty at baseline were excluded. The average follow-up period was 5.9 years. Measurements: Depressive symptoms were measured by the 20-item Center for Epidemiological Studies Depression (CES-D) Scale. Frailty was assessed using the Fried frailty measurement. Participants were stratified by baseline robust or pre-frailty status to reduce the confounding effects of the shared criteria between depressive symptoms and frailty. Overall and stratified survival analyses were conducted to assess risks of developing frailty as a result of baseline depressive symptoms. Results: One hundred individuals (3.7%) had depressive symptoms at baseline. Twenty-seven individuals (27.0%) with depressive symptoms developed frailty, whereas only 305 out of the 2,617 participants (11.7%) without depressive symptoms developed frailty during the follow-up period. After adjusting for covariates, depressive symptoms were associated with a 2.6-fold (95% CI 1.6, 4.2) increased hazard of incident frailty. The patterns of increased hazard were also observed when further stratified by baseline robust or pre-frailty status. Conclusions: Depressive symptoms increased the risk of developing frailty among the older Asian population. The impact of late-life depressive symptoms on physical health was notable. These findings also replicated results from Western populations. Future policies on geriatric public health need to focus more on treatment and intervention against geriatric depressive symptoms to prevent incident frailty among older population.


2015 ◽  
Vol 12 (7) ◽  
pp. 909-914 ◽  
Author(s):  
Jasper Schipperijn ◽  
Mathias Ried-Larsen ◽  
Merete S. Nielsen ◽  
Anneli F. Holdt ◽  
Anders Grøntved ◽  
...  

Background:This longitudinal study aimed to examine if a Movability Index (MI), based on objectively measured built environment characteristics, was a determinant for objectively measured physical activity (PA) among young adults.Methods:Data collected from 177 persons participating in the Danish part of the European Youth Hearth Study (EYHS) was used to examine the effect of the built environment on PA. A MI was developed using objectively measured built environment characteristics, and included residential density, recreational facilities, daily destinations and street connectivity.Results:Results showed a positive cross-sectional association between MI and PA. PA decreased from baseline to follow-up. MI increased, primarily due to participants relocating to larger cities. An increase in MI from baseline to follow-up was associated with a reduced decrease in PA for females.Conclusions:Our findings suggest that the built environment is a determinant for PA, especially for females. The found gender differences might suggest the need to develop gender specific environmental indices in future studies. The validity of the measures can be further improved by creating domain specific PA measures as well as domain specific environmental indices and this can potentially reveal more specific built environment determinants for PA.


SLEEP ◽  
2021 ◽  
Author(s):  
Céline De Looze ◽  
Joanne C Feeney ◽  
Siobhan Scarlett ◽  
Rebecca Hirst ◽  
Silvin P Knight ◽  
...  

Abstract Study Objectives This study examines the cross-sectional and two-year follow-up relationships between sleep and stress and total hippocampal volume and hippocampal subfield volumes among older adults. Methods 417 adults (aged 68.8±7.3; 54% women) from the Irish Longitudinal Study on Ageing completed an interview, a questionnaire and multiparametric brain MRI. The relationships between self-reported sleep duration, sleep problems, perceived stress and total hippocampal volume were examined by using ordinary least squares regressions. Linear mixed-effects models were used to investigate the relationships between sleep duration, sleep problems, perceived stress, changes in these measures over two-years and hippocampal subfield volumes. Results No cross-sectional and follow-up associations between sleep and total hippocampal volume and between stress and total hippocampal volume were found. By contrast, Long sleep (≥9-10 hours / night) was associated with smaller volumes of molecular layer, hippocampal tail, presubiculum and subiculum. The co-occurrence of Short sleep (≤6 hours) and perceived stress was associated with smaller cornu ammonis 1, molecular layer, subiculum and tail. Sleep problems independently and in conjunction with higher stress, and increase in sleep problems over 2 years were associated with smaller volumes of these same subfields. Conclusion Our study highlights the importance of concurrently assessing sub-optimal sleep and stress for phenotyping individuals at risk of hippocampal subfield atrophy.


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Graziamaria Corbi ◽  
Francesco Cacciatore ◽  
Klara Komici ◽  
Giuseppe Rengo ◽  
Dino Franco Vitale ◽  
...  

AbstractAim of the present study was to assess the impact of gender on the relationship between long-term mortality and clinical frailty. In an observational, longitudinal study on 10-year mortality, we examined 1284 subjects. The Frailty Staging System was used to assess frailty. The Cox model was employed to assess variables independently associated with survival using a backward stepwise algorithm. To investigate the possible interactions between gender and the selected variables, an extension of the multivariable fractional polynomial algorithm was adopted. Women were more likely to be older, have a higher disability, present with more comorbidities, consume more drugs, be frail and have a higher rate of survival at the follow-up than were men. At the Cox multivariate analysis only age (HR 2.26), female gender (HR 0.43), and number of drugs (HR 1.57) were significant and independent factors associated with all-cause mortality. In the survival analyses, only frailty (vs no frailty) showed significant interaction with gender (p < 0.001, HR = 1.92). While the presence of frailty reduced the survival rate in women, no effect was observed in men. Importantly, frail women showed higher survival rates than did both frail and no frail men. The main finding of the present study is that gender shapes up the association between frailty and long-term survival rates.


2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Zhiyuan Wu ◽  
Haiping Zhang ◽  
Xinlei Miao ◽  
Haibin Li ◽  
Huiying Pan ◽  
...  

Abstract Background To evaluate the association of physical activity (PA) intensity with cognitive performance at baseline and during follow-up. Methods A total of 4039 participants aged 45 years or above from the China Health and Retirement Longitudinal Study were enrolled in visit 1 (2011–2012) and followed for cognitive function in visit 2 (2013–2014), visit 3 (2015–2016), and visit 4 (2017–2018). We analyzed the association of PA intensity with global cognition, episodic memory, and mental intactness at baseline using adjusted regression methods and evaluated the long-term effect of PA intensity using multiple measures of cognition scores by mixed effect model. Results In cross-sectional analysis, mild and moderate PA, rather than vigorous PA, was associated with better cognitive performance. The results remained consistent in multiple sensitivity analyses. During the follow-up, participant with mild PA had a 0.56 (95% CI 0.12–0.99) higher global cognition, 0.23 (95% CI 0.01–0.46) higher episodic memory, and 0.33 (95% CI 0.01–0.64) higher mental intactness, while those with moderate PA had a 0.74 (95% CI 0.32–1.17) higher global score, 0.32 (95% CI 0.09–0.54) higher episodic memory, and 0.43 (95% CI 0.12–0.74) higher mental intactness, compared with individuals without PA. Vigorous PA was not beneficial to the long-term cognitive performance. Conclusions Our study indicates that mild and moderate PA could improve cognitive performance, rather than the vigorous activity. The targeted intensity of PA might be more effective to achieve the greatest cognition improvement considering age and depressive status.


2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
S Wedner-Ross ◽  
F Vo. Versen-Höynck

Abstract Study question This cross-sectional survey sought the views of women seeking fertility treatment on the impact of the COVID–19 pandemic on their fertility treatment and attitudes. Summary answer Most respondents worried the recommendations to postpone treatment would reduce their chances of pregnancy and were concerned about negative effects of SARS-Cov–2 infections on pregnancy. What is known already In spring 2020, the recommendations of ESHRE and German professional societies to postpone fertility treatments resulted in limited or closed services from mid-March to early May in many clinics. Previous studies reported that postponing fertility clinic appointments causes psychological distress, with most patients saying they would have preferred to continue treatment. While no similar studies are available from Germany, where COVID–19 incidence was relatively low, concerns of the patients about possible consequences of a treatment delay and a SARS-CoV–2 infection on fertility and pregnancy remain unknown. Study design, size, duration This cross-sectional, anonymous, online questionnaire was completed in June-December 2020 by 249 women attending fertility clinics across Germany. The women were recruited using leaflets, directly by study personnel either in person or by telephone, or via online support group forums for fertility patients. Participants/materials, setting, methods All women seeking treatment in fertility clinics were eligible to participate. The online survey covered questions about the patient’s quality of life, their opinions about the professional societies’ recommendations and their effects as well as any concerns about infection with SARS-CoV–2. Statistical analysis was conducted using SPSS Version 27. Main results and the role of chance Three-quarters of participants disagreed with the pausing of fertility treatments. Women who participated from October-December 2020, when the incidence rate was high, were as likely to disagree as participants that participated from June-September 2020 (73% vs 79%, p = 0.3). Nearly all participants (95%) were concerned that treatment delays would reduce their chances of pregnancy. 72 participants (29%) had their appointments cancelled. Nearly all (97%) reported being upset by this, with 40 (56%) reporting that they were extremely or very disappointed about the cancellation. Women coming for follow-up appointments and women who had to wait 10 weeks or longer were more likely to be upset by the postponement or cancellation of their appointment (p = 0.016 and p = 0.012, respectively). Nearly all (97%) of the participants were worried about possible negative effects a SARS-CoV–2 infection might have related to their fertility, pregnancy or unborn child. Sixty-one percent stated they were very or moderately concerned about the negative influence the infection might have on the womańs own health during pregnancy and 60% were very to moderately concerned about potential negative effects for the unborn child. However, only 26% reported they were very or moderately concerned about the potential negative effects of an infection on fertility. Limitations, reasons for caution The main limitations of this study are the possibility of selection bias as people with strong opinions are more likely to have participated and the lack of information on non-responders due to the study design. Also, the Covid–19 pandemic is evolving continuously meaning that participantś opinions may vary over time. Wider implications of the findings: Postponement of treatments increased distress among patients and should be avoided when possible. If unavoidable, follow-up patients should be prioritised for treatment and the length of postponement should be minimised. Fertility clinics must provide information about the current state of knowledge of SARS-Cov–2 infections in pregnancies and options for immunization. Trial registration number Not applicable


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