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Int. J. Environ. Res. Public Health 2017, 14(7), 811; https://doi.org/10.3390/ijerph14070811

Association between Visual Impairment and Low Vision and Sleep Duration and Quality among Older Adults in South Africa

1
HIV/AIDS/STIs and TB (HAST), Human Sciences Research Council, Pretoria 0001, South Africa
2
Department of Research & Innovation, University of Limpopo, Sovenga 0727, South Africa
3
Office of the Deputy Vice Chancellor: Research & Engagement, Nelson Mandela Metropolitan University, Port Elizabeth 6001, South Africa
4
Department of Social Work, University of Limpopo, Sovenga 0727, South Africa
*
Author to whom correspondence should be addressed.
Academic Editors: Girardin Jean-Louis and Azizi Seixas
Received: 6 June 2017 / Revised: 7 July 2017 / Accepted: 18 July 2017 / Published: 19 July 2017
(This article belongs to the Special Issue Sleep Health)
Full-Text   |   PDF [291 KB, uploaded 20 July 2017]

Abstract

This study aims to estimate the association between visual impairment and low vision and sleep duration and poor sleep quality in a national sample of older adults in South Africa. A national population-based cross-sectional Study of Global Ageing and Adults Health (SAGE) wave 1 was conducted in 2008 with a sample of 3840 individuals aged 50 years or older in South Africa. The interviewer-administered questionnaire assessed socio-demographic characteristics, health variables, sleep duration, quality, visual impairment, and vision. Results indicate that 10.0% of the sample reported short sleep duration (≤5 h), 46.6% long sleep (≥9 h), 9.3% poor sleep quality, 8.4% self-reported and visual impairment (near and/or far vision); and 43.2% measured low vision (near and/or far vision) (0.01–0.25 decimal) and 7.5% low vision (0.01–0.125 decimal). In fully adjusted logistic regression models, self-reported visual impairment was associated with short sleep duration and poor sleep quality, separately and together. Low vision was only associated with long sleep duration and poor sleep quality in unadjusted models. Self-reported visual impairment was related to both short sleep duration and poor sleep quality. Population data on sleep patterns may want to include visual impairment measures. View Full-Text
Keywords: sleep duration; sleep quality; visual impairment; low vision; Study of Global Ageing and Adult Health; South Africa sleep duration; sleep quality; visual impairment; low vision; Study of Global Ageing and Adult Health; South Africa
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Peltzer, K.; Phaswana-Mafuya, N. Association between Visual Impairment and Low Vision and Sleep Duration and Quality among Older Adults in South Africa. Int. J. Environ. Res. Public Health 2017, 14, 811.

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