Table 3. Risk factors associated with blindness or severe visual impairmenta before cataract surgery.
| Characteristic | OR | 95% CI | OR | 95% CI |
|---|---|---|---|---|
| Gender | ||||
| Male | 1.00 | – | Droppedb | – |
| Female | 1.05 | 0.95–1.16 | – | – |
| Age (years) | ||||
| < 50 | 1.00 | – | 1.00 | – |
| Per decade increase | 1.15 | 1.07–1.23 | 1.19 | 1.11–1.27 |
| Literacy | ||||
| Yes | 1.00 | – | 1.00 | – |
| No | 3.86 | 3.52–4.23 | 2.96 | 2.39–3.67 |
| First eye | ||||
| No | 1.00 | – | 1.00 | – |
| Yes | 3.69 | 2.98–4.55 | 3.63 | 2.97–4.44 |
| Specialization | ||||
| Low | 1.00 | – | 1.00 | – |
| Per category increase | 0.81 | 0.74–0.88 | 0.90 | 0.83–0.97 |
| HDI | ||||
| High | 1.00 | – | 1.00 | – |
| Per category decrease | 1.95 | 1.59–2.37 | 1.49 | 1.21–1.84 |
CI, confidence interval; HDI, Human Development Index; OR, odds ratio.
a Visual acuity < 6/60 in the better eye.
b Dropped from the multivariable analysis because of lack of significance.