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Ethnic Differences in Disability Prevalence and Their Determinants Studied over a 20-Year Period: A Cohort Study

Baradaran, Hamid Reza, Williams, Emily, Tillin, Therese, Whincup, Peter, Forouhi, Nita G. and Chaturvedi, Nishi (2012) Ethnic Differences in Disability Prevalence and Their Determinants Studied over a 20-Year Period: A Cohort Study PLoS ONE, 7 (9).

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Background To compare disability prevalence rates in the major ethnic groups in the UK and understand the risk factors contributing to differences identified. It was hypothesised that Indian Asian and African Caribbean people would experience higher rates of disability compared with Europeans. Methods Data was collected from 888 European, 636 Indian Asian and 265 African Caribbean men and women, aged 58–88 years at 20-year follow-up of community-based cohort study, based in West London. Disability was measured using a performance-based locomotor function test and self-reported questionnaires on functional limitation, and instrumental (IADL) and basic activities of daily living (ADL). Results The mean (SD) age of participants at follow-up was 69.6 (6.2) years. Compared with Europeans, Indian Asian people were significantly more likely to experience all of the disability outcomes than Europeans; this persisted after adjustment for socioeconomic, behavioural, adiposity and chronic disease risk factors measured at baseline (locomotor dysfunction: adjusted odds ratio (OR) 2.20, 95% CI 1.56–3.11; functional limitation: OR 2.77, 2.01–3.81; IADL impairment: OR 3.12, 2.20–4.41; ADL impairment: OR 1.58, 1.11–2.24). In contrast, a modest excess risk of disability was observed in African Caribbeans, which was abolished after adjustment (e.g. locomotor dysfunction: OR 1.37, 0.90–1.91); indeed a reduced risk of ADL impairment appeared after multivariable adjustment (OR from 0.99, 0.68–1.45 to 0.59, 0.38–0.93), compared with Europeans. Conclusions Substantially elevated risk of disability was observed among Indian Asian participants, unexplained by known factors. A greater understanding of determinants of disability and normative functional beliefs of healthy aging is required in this population to inform intervention efforts to prevent disability.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Health Sciences
Authors :
Baradaran, Hamid Reza
Tillin, Therese
Whincup, Peter
Forouhi, Nita G.
Chaturvedi, Nishi
Date : 28 September 2012
DOI : 10.1371/journal.pone.0045602
Copyright Disclaimer : ©� 2012 Williams et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Contributors :
Baradaran, Hamid Reza
Depositing User : Clive Harris
Date Deposited : 12 Jul 2017 14:05
Last Modified : 16 Jan 2019 18:54

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