Table 1.
Baseline characteristics of all participants by cataract status.
| Variables | Total sample (n = 47,395) | Possible cataract (n = 17,919) | Non-cataract (n = 29,476) | P |
|---|---|---|---|---|
| Gender (%) | <0.001 | |||
| Male | 20,878 (44.1) | 6,224 (34.7) | 14,654 (49.7) | |
| Female | 26,517 (55.9) | 11,695 (65.3) | 14,822 (50.3) | |
| Age (year) (%) | <0.001 | |||
| 65–79 | 14,869 (31.4) | 2,610 (14.6) | 12,259 (41.6) | |
| 80–99 | 24,508 (51.7) | 9,943 (55.5) | 14,565 (49.4) | |
| ≥100 | 8,018 (16.9) | 5,366 (29.9) | 2,652 (9.0) | |
| Education level (%) | <0.001 | |||
| Educated | 25,741 (54.3) | 12,222 (68.2) | 13,519 (45.9) | |
| Uneducated | 21,654 (45.7) | 5,697 (31.8) | 15,957 (54.1) | |
| Marital status (%) | <0.001 | |||
| Married | 17,579 (37.1) | 4,088 (22.8) | 13,491 (45.8) | |
| Unmarried, divorced, or widowed | 29,816 (62.9) | 13,831 (77.2) | 15,985 (54.2) | |
| Pre-retirement occupation (%) | <0.001 | |||
| Peasant | 18,542 (39.1) | 6,303 (35.2) | 12,239 (41.5) | |
| Non-peasant | 28,853 (60.9) | 11,616 (64.8) | 17,237 (58.5) | |
| Household income (yuan) (%) | <0.001 | |||
| ≥100,000 | 1,115 (2.4) | 492 (2.7) | 623 (2.1) | |
| <100,000 | 46,280 (97.6) | 17,427 (97.3) | 28,853 (97.9) | |
| Smoking status (%) | 0.008 | |||
| Previous | 7,116 (15.1) | 2,430 (13.7) | 4,686 (16.0) | |
| Current | 7,811 (16.6) | 2,052 (11.6) | 5,759 (19.7) | |
| Never | 32,082 (68.2) | 13,278 (74.8) | 18,804 (64.3) | |
| Consuming alcohol (%) | 0.011 | |||
| Previous | 5,899 (12.6) | 2,158 (12.2) | 3,741 (12.8) | |
| Current | 7,460 (15.9) | 2,038 (11.5) | 5,422 (18.6) | |
| Never | 33,511 (71.5) | 13,510 (76.3) | 20,001 (68.6) | |
| Physical activities (%) | 0.013 | |||
| Previous | 4,709 (10.1) | 2,153 (12.2) | 2,556 (8.8) | |
| Current | 13,937 (29.8) | 3,367 (19.1) | 10,570 (36.3) | |
| Never | 28,133 (60.1) | 12,131 (68.7) | 16,002 (54.9) | |
| Total DDS quartile (%) | <0.001 | |||
| Q1 (≤ 4) | 17,413 (36.7) | 7,382 (41.2) | 10,031 (34.0) | |
| Q2 (>4 ≤ 5) | 8,272 (17.5) | 3,127 (17.5) | 5,145 (17.5) | |
| Q3 (>5 ≤ 7) | 14,433 (30.5) | 5,212 (29.1) | 9,221 (31.3) | |
| Q4 (>7 ≤ 10) | 7,209 (15.2) | 2,151 (12.0) | 5,058 (17.2) | |
| Animal-based DDS quartile (%) | <0.001 | |||
| Q1 (≤ 1) | 14,237 (30.0) | 5,827 (32.5) | 8,410 (28.5) | |
| Q2 (>1 ≤ 2) | 11,990 (25.3) | 4,449 (24.8) | 7,541 (25.6) | |
| Q3 (>2 ≤ 3) | 13,782 (29.1) | 5,035 (28.1) | 8,747 (29.7) | |
| Q4 (>3 ≤ 4) | 7,386 (15.6) | 2,608 (14.6) | 4,778 (16.2) | |
| Plant-based DDS quartile (%) | <0.001 | |||
| Q1 (≤ 2) | 15,564 (32.8) | 6,762 (37.7) | 8,802 (29.9) | |
| Q2 (>2 ≤ 3) | 15,864 (33.5) | 6,114 (34.1) | 9,750 (33.1) | |
| Q3 (>3 ≤ 4) | 10,080 (21.3) | 3,445 (19.2) | 6,635 (22.5) | |
| Q4 (>4 ≤ 6) | 5,761 (12.2) | 1,510 (8.4) | 4,251 (14.4) | |
| N | 47,395 | 17,919 | 29,476 | 47,395 |
DDS, dietary diversity score.