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Int. J. Environ. Res. Public Health 2017, 14(12), 1523; doi:10.3390/ijerph14121523

Prevalence of Self-Reported Diagnosed Cataract and Associated Risk Factors among Elderly South Africans

1
Office of the Deputy Vice Chancellor: Research and Innovation, North West University, Potchefstroom 2520, South Africa
2
HIV/AIDS/STI/TB Research Programme, Human Sciences Research Council, Pretoria 0002, South Africa
3
Department of Research & Innovation, University of Limpopo, Turfloop 0727, South Africa
4
London School of Hygiene and Tropical Medicine, University of London, London WC1E 7HT, UK
5
Office of the Deputy Vice Chancellor for Research and Engagement, Nelson Mandela University, Port Elizabeth 6001, South Africa
*
Author to whom correspondence should be addressed.
Received: 16 August 2017 / Revised: 29 November 2017 / Accepted: 30 November 2017 / Published: 6 December 2017
(This article belongs to the Section Global Health)
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Abstract

This paper estimates the prevalence of self-reported cataract and associated risk factors among individuals aged ≥50 years in South Africa. Data from a nationally-representative cross-sectional Study on Global AGEing and Adult Health (SAGE) (N = 3646) conducted in South Africa from 2007–2008 was analyzed. The primary outcome was self-reported cataract, and exposures included socio-demographics, self-reported co-morbidities, and behavioral factors. Linearized multivariate logistic regression models were used. The weighted prevalence of self-reported diagnosed cataract was 4.4% (95%CI: 3.4–5.8). Prevalence was greater among individuals with advancing age (10.2%), higher quality of life (QoL) (5.9%), education (5.2%), and wealth (5.8%) than their counterparts. Prevalence was also higher among individuals with depression (17.5%), diabetes (13.3%), hypertension (9.1%), and stroke (8.4%) compared to those without these conditions, with the exception of obesity (4.2%). In the final multivariate model, the odds of self-reported cataract were: 4.14 times higher among people ≥70 years than 50 to 59 year olds (95%CI: 2.28–7.50); 2.48 times higher in urban than rural residents (95%CI: 1.25–4.92); 5.16, 2.99, and 1.97 times higher for individuals with depression (95%CI: 1.92–13.86), hypertension (95%CI: 1.60–5.59), and diabetes (95%CI: 1.07–3.61), compared to those without these conditions. View Full-Text
Keywords: age-related cataracts; blindness; inequalities; risk factors; SAGE; South Africa; Sub-Saharan Africa; lower middle income countries age-related cataracts; blindness; inequalities; risk factors; SAGE; South Africa; Sub-Saharan Africa; lower middle income countries
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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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MDPI and ACS Style

Phaswana-Mafuya, N.; Peltzer, K.; Crampin, A.; Ahame, E.; Sokhela, Z. Prevalence of Self-Reported Diagnosed Cataract and Associated Risk Factors among Elderly South Africans. Int. J. Environ. Res. Public Health 2017, 14, 1523.

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