《Table 1 Characteristics of older adults, aged 65y and above, in urban and rural areas》

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《The association between socioeconomic status and visual disability among older adults in China》

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VD:Visual disability.

Analytic Approach Logistic regression models were used to estimate multivariate associations between VD and indicators of SES，and odds ratios（ORs）with 95%confidence intervals（CIs）are presented.Studies have shown that indicators of SES are correlated but interchangeable[19].Thus，we controlled for each indicator of SES and the related covariates in order to obtain the net effect of each indicator.We reported the final model with adjusted ORs of SES on VD；P<0.05 was considered statistically significant.Stata Version 13.0 for Windows（Stata，College Station，TX，USA）was used for the statistical analyses.All analyses were run separately for urban and rural areas.