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PLoS By Category | Recent PLoS Articles
Biophysics - Ophthalmology - Physics - Public Health and Epidemiology

The Relationship between the Disability Prevalence of Cataracts and Ambient Erythemal Ultraviolet Radiation in China
Published: Friday, November 30, 2012
Author: Yang Wang et al.

by Yang Wang, Jiaming Yu, Qian Gao, Liwen Hu, Na Gao, Huizhi Gong, Yang Liu

In Western countries, ultraviolet (UV)-induced skin cancer has been studied extensively regarding the high incidence of skin cancers in the white population; however, for people of color, cataracts are the main public health issue in relation to increased ambient ultraviolet radiation (UVR). To our knowledge, few studies have been conducted examining the relationship between cataracts and ambient UVR in China. In this study, we aimed to explore the relationship between and the factors influencing the disability prevalence of cataracts and annual ambient erythemal UVR exposure in 31 regions of China. The data used to determine the disability prevalence of cataracts was obtained from the Second China National Sample Survey on Disability. The regional annual erythemal UVR was calculated using Geographic Information System (GIS) methods based on data from the National Aeronautics and Space Administration (NASA) database. The relationship between the disability prevalence of cataracts and the annual ambient erythemal UVR was examined by using logistic regression. Both the age-standardized disability prevalence of cataracts (OR?=?3.97, 95%CI 1.30–12.13, per 100KJ/m2 increase in annual ambient erythemal UVR) and the disability prevalence of cataracts among a population =65 years old (OR?=?3.97, 95%CI 1.30–12.13, per 100KJ/m2 increase in annual ambient erythemal UVR) were higher in association with higher ambient erythemal UVR. Regions with higher urbanization and educational levels had lower disability prevalence of cataracts. We found positive associations of the age-standardized disability prevalence of cataracts and the disability prevalence of cataracts among a population =65 years old with ambient erythemal UVR in 31 regions of China.
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