Table 2.

Association of registered blindness with gender and age in Jing-an district in 2009

		OR	95%CI		P
			lower	Upper
Sex	male	1
	female	0.87	0.73	1.04	0.12
age	1-29	1
	30-49	2.57	2.13	3.11	<0.001
	50-69	7.27	5.48	9.63	<0.001
	70 or 70+	21.20	13.69	32.84	<0.001

CI: confidence interval

OR: odds ratio (binary logistic regression)