Sociodemographic correlates of blindness
| Demographic characteristics (n) | Prevalence of blindness (presenting vision <6/60) (95% CI) | Adjusted OR (95% CI) | Test of significance | Trend of odds for category |
|---|---|---|---|---|
| Age groups | ||||
| 50–59 (29 851) | 3.37% (3.09 to 3.65) | 1.0 | ||
| 60–69 (21 445) | 9.02% (8.4 to 9.64) | 2.4 (2.2 to 2.6) | χ2, 453.48 | |
| 70+ (12 041) | 20.31 (19.25 to 21.37) | 5.0 (4.6 to 5.5) | χ2, 1409.41 | χ2, 1541.8; p<0.00001 |
| Sex | ||||
| Male (29 980) | 6.98% (6.56 to 7.40) | 1.0 | ||
| Female (33 357) | 9.87% (9.34 to 10.40) | 1.2 (1.2 to 1.3) | χ2, 36.46 | χ2, 36.46; p<0.00001 |
| Literacy | ||||
| Educated beyond grade 10 (1982) | 1.87% (1.30 to 2.44) | 1.0 | ||
| Educated to grade 6–10 (5304) | 2.24% (1.83 to 2.65) | 1.1 (0.7 to 1.6) | χ2, 0.11 | |
| Educated to grade 5 (11 036) | 4.82% (3.69 to 5.33) | 1.9 (1.4 to 2.7) | χ2, 14.1 | |
| Illiterate (44 837) | 10.44% (9.96 to 10.92) | 3.7 (2.7 to 5.2) | χ2, 69.39 | χ2, 360.95; p<0.00001 |
| Place of residence | ||||
| Urban (9691) | 6.48% (5.66 to 7.3) | 1.0 | ||
| Rural (53 646) | 8.87% (8.4 to 9.33) | 1.2 (1.1 to 1.4) | χ2, 20.38 | χ2, 20.38; p<0.00001 |
| Working status | ||||
| Actively working (27 107) | 5.20% (4.81 to 5.59) | 1.0 | ||
| Engaged in household work (24 626) | 7.04% (6.55 to 7.53) | 1.1 (1.0 to 1.2) | χ2, 4.09 | |
| Not doing any work (11 485) | 19.25% (18.1 to 20.4) | 2.0 (1.8 to 2.2) | χ2, 257 | χ2, 320.33; p<0.00001 |