Prevalence and general health status of people with intellectual disabilities in Scotland: a total population study

Hughes-Mccormack, L. A., Rydzewska, E. , Henderson, A. , MacIntyre, C., Rintoul, J. and Cooper, S.-A. (2018) Prevalence and general health status of people with intellectual disabilities in Scotland: a total population study. Journal of Epidemiology and Community Health, 72(1), pp. 78-85. (doi: 10.1136/jech-2017-209748) (PMID:29070675)

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Background: Prevalence of intellectual disabilities varies considerably between studies. People with intellectual disabilities experience health inequalities, but most studies comprise small or incomplete populations. We investigated in a whole country population the (1) prevalence of intellectual disabilities and (2) general health status compared with the general population. Method: Data were from Scotland’s Census, 2011. We calculated the prevalence of intellectual disabilities, reported general health status of people with and without intellectual disabilities and the extent of health-related limitations to daily activities. We conducted logistic regressions to determine the ORs of intellectual disabilities predicting poor health and associations with age and gender. Results: Of Scotland’s 5 295 403 population, 26 349 (0.5%) had intellectual disabilities; 15 149 (57.5%) were males and 11 200 (42.5%) were females; 5234 (0.6%) were children/youth (0–15) and 21 115 (0.5%) were adults (16–75+ years). Identification of intellectual disabilities rises until age 5 years, with a further small rise by age 9 years. Children and adults with intellectual disabilities reported more poor health (47.9% and 40.3%) than the general population (2.1% and 13.8%) and were more limited in activities by their health. Intellectual disabilities had an OR of 43.2 (95% CI 40.8 to 45.7) in predicting poor health; the influence of increasing age on poor health was markedly interacted by presence of intellectual disabilities, likely to be due to a ‘healthy survivor’ effect within the intellectual disabilities population. Conclusion: People with intellectual disabilities have poorer general health than other people, especially children and young people. Accurate information on population prevalence and health status is essential to plan appropriate resources.

Item Type:Articles
Additional Information:Funding: Scottish Government via the Scottish Learning Disabilities Observatory.
Keywords:Intellectual disabilities, prevalence, health inequalities, health status, physical health.
Glasgow Author(s) Enlighten ID:Rydzewska, Dr Ewelina and Hughes, Mrs Laura and Henderson, Mrs Angela and Cooper, Professor Sally-Ann
Authors: Hughes-Mccormack, L. A., Rydzewska, E., Henderson, A., MacIntyre, C., Rintoul, J., and Cooper, S.-A.
College/School:College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > Mental Health and Wellbeing
Journal Name:Journal of Epidemiology and Community Health
Publisher:BMJ Publishing Group
ISSN (Online):1470-2738
Published Online:25 October 2017
Copyright Holders:Copyright © 2017 The Authors
First Published:First published in Journal of Epidemiology and Community Health 72:78-85
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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