Table 1. Demographic characteristics of the included participants.
| Characteristic | N (%) |
|---|---|
| Age (year) | 172,814 |
| 50–59 | 10,329 (5.98) |
| 60–69 | 50,804 (29.40) |
| 70–79 | 76,370 (44.19) |
| ≥80 | 35,311 (20.43) |
| Overall, mean (SD) | 73.28 (8.82) |
| Gender | |
| Male | 80,531 (46.60) |
| Female | 92,283 (53.40) |
| Economic status | |
| Low income family | 21,152 (12.24) |
| Moderate to high income family | 151,662 (87.76) |
| Education | |
| Uneducated | 54,212 (31.37) |
| Educated | 118,602 (68.63) |
| BCVA of patients with cataract | 56,292 (32.57) |
| BCVA <20/200 in either eye | 6,214 (3.40) |
| BCVA 20/63 to 20/200 in either eye | 12,208 (7.06) |
| BCVA ≥20/63 in both eyes | 37,870 (21.91) |
SD, standard deviation; BCVA, best corrected visual acuity.