Table 2

Univariate distribution of diabetic retinopathy

	Total in group	Number with diabetic retinopathy	Prevalence (%)
Age^* (years)
30–39	463	1	0.22
40–49	390	4	1.02
50–59	257	15	5.84
60–69	182	6	3.30
⩾70	89	2	2.25
Sex^†
Male	623	14	2.24
Female	758	14	1.85
Socioeconomic status^‡
Extreme lower	120	2	1.67
Lower	516	7	1.36
Middle	576	16	2.78
Upper	142	3	2.11
Religion^§
Hindu	871	18	2.07
Muslim	480	10	2.08
Other	30	0	0

In 18 of the 1399 subjects ⩾30 years old, fundus could not be seen in either eye because of media opacity or small pupil; these subjects are not included in this table.
In 28 of the 1399 subjects ⩾30 years old, information about socioeconomic status was not available; in one of these 28 subjects, fundus could not be seen in either eye.
p Values with χ² test: ^*p<0.001, ^†p=0.60, ^‡p=0.42,^§p=0.73.