Table 5.

Relation of age, sex, and literacy to cataract blindness and surgery for people from urban and rural areas*

	Never operated cataract blindness		All cataract operated			Surgical coverage
	Urban residence	Rural residence	Urban residence	Rural residence	Cataract blindness burden§	Urban residence	Rural residence
Age (years)
50–59	1.0	1.0	1.0	1.0	1.0	1.0	1.0
60–69	4.2 (2.0 to 8.5)†	2.2 (1.5 to 3.1)†	3.0 (2.2 to 4.2)†	3.6 (2.8 to 4.7)†	3.2 (2.6 to 3.8)†	0.6 (0.2 to 1.4)	1.7 (1.0 to 2.6)‡
≥70	6.5 (2.7 to 15.5)†	5.5 (4.0 to 7.6)†	7.6 (3.7 to 15.5)†	7.0 (5.4 to 9.1)†	8.5 (6.9 to 10.4)†	0.9 (0.4 to 2.2)	1.3 (0.9 to 2.1)
Sex
Male	1.0	1.0	1.0	1.0	1.0	1.0	1.0
Female	1.0 (0.8 to 1.3)	2.3 (1.8 to 3.1)†	1.1 (0.8 to 1.7)	1.1 (0.8 to 1.5)	1.5 (1.3 to 1.8)†	1.1 (0.8 to 1.5)	0.5 (0.3 to 0.8)‡
Literacy
Literate	1.0	1.0	1.0	1.0	1.0	1.0	1.0
Illiterate	3.6 (1.5 to 8.7)‡	1.8 (1.3 to 2.5)†	1.0 (0.7 to 1.6)	0.7 (0.5 to 0.9)‡	1.3 (1.1 to 1.6)†	0.3 (0.1 to 0.8)‡	0.5 (0.3 to 0.9)‡

*Data are given as adjusted odds ratios (95% confidence intervals), obtained by multiple logistic regression models with age category, sex, literacy, and residence as covariates; †p≤0.010; ‡p≤0.050; §the adjusted odds ratio for rural/urban in this model was 0.9 (95% CI: 0.6 to 1.3).