Table 1.
Characteristics of Participants Who Did and Did Not Undergo Cataract Surgery During the Follow-Up
| Cataract Surgery, n (%) | ||||
|---|---|---|---|---|
| Factor | All, n (%) | Yes (n = 14,338) | No (n = 122,795) | P |
| Baseline age (y) | <0.001 | |||
| 45–49 | 30,977 (22.6) | 929 (6.5) | 30,048 (24.5) | |
| 50–54 | 37,072 (27.0) | 2187 (15.3) | 34,885 (28.4) | |
| 55–59 | 37,695 (27.5) | 4452 (31.1) | 33,243 (27.1) | |
| 60–65 | 31,389 (22.9) | 6770 (47.2) | 24,619 (20.0) | |
| Sex | <0.001 | |||
| Male | 60,312 (44.0) | 5773 (40.3) | 54,539 (44.4) | |
| Female | 76,821 (56.0) | 8565 (59.7) | 68,256 (55.6) | |
| Household income (AUD/y) | 0.653 | |||
| <20,000 | 11,244 (8.2) | 1059 (7.4) | 10,185 (8.3) | |
| 20,000–40,000 | 19,249 (14.0) | 2201 (15.4) | 17,048 (13.9) | |
| 40,000–70,000 | 30,966 (22.6) | 3413 (23.8) | 27,553 (22.4) | |
| >70,000 | 51,556 (37.6) | 4822 (33.6) | 46,734 (38.1) | |
| Missing | 24,118 (17.6) | 2843 (19.8) | 21,275 (17.3) | |
| Highest education | 0.556 | |||
| University | 9381 (6.8) | 883 (6.2) | 8498 (6.9) | |
| High school/technical and further education (TAFE) | 84,902 (61.9) | 9013 (62.9) | 75,889 (61.8) | |
| <10 y | 41,646 (30.4) | 4313 (30.1) | 37,333 (30.4) | |
| BMI | 0.502 | |||
| Normal | 50,040 (36.5) | 5133 (35.8) | 44,907 (36.6) | |
| Overweight | 51,152 (37.3) | 5472 (38.2) | 45,680 (37.2) | |
| Obesity | 28,244 (20.6) | 2994 (20.9) | 25,250 (20.6) | |
| Missing | 7697 (5.6) | 739 (5.2) | 6958 (5.7) | |
| Diabetes | <0.001 | |||
| Yes | 6844 (5.0) | 1123 (7.8) | 5721 (4.7) | |
| No | 130,289 (95.0) | 13,215 (92.2) | 117,074 (95.3) | |
| Hypertension | <0.001 | |||
| Yes | 35,135 (25.6) | 4640 (32.4) | 30,495 (24.8) | |
| No | 101,998 (74.4) | 9698 (67.6) | 92,300 (75.2) | |
| Smoker (current + past) | <0.001 | |||
| Yes | 11,528 (8.4) | 780 (5.4) | 10,748 (8.8) | |
| No | 125,600 (91.6) | 13,558 (94.6) | 112,042 (91.2) | |
| Alcohol consumption per week | 0.003 | |||
| <14 drinks | 98,569 (71.9) | 10,463 (73.0) | 88,106 (71.8) | |
| ≥14 drinks | 36,865 (26.9) | 3678 (25.7) | 33,187 (27.0) | |
| Physical activity (sessions/wk) | 0.140 | |||
| <5 | 22,279 (16.2) | 2166 (15.1) | 20,113 (16.4) | |
| ≥5–9 | 39,680 (28.9) | 4217 (29.4) | 35,463 (28.9) | |
| ≥9–14 | 32,985 (24.1) | 3601 (25.1) | 29,384 (23.9) | |
| ≥14 | 39,027 (28.5) | 4017 (28.0) | 35,010 (28.5) | |
| Tanning with repeated sun exposure | <0.001 | |||
| Get very tanned | 41,168 (30.0) | 3971 (27.7) | 37,197 (30.3) | |
| Get moderately tanned | 55,048 (40.1) | 5897 (41.1) | 49,151 (40.0) | |
| Get mildly or occasionally tanned | 29,595 (21.6) | 3210 (22.4) | 26,385 (21.5) | |
| Never tan only get freckled | 11,322 (8.3) | 1260 (8.8) | 10,062 (8.2) | |
| Outdoors on weekdays (hr/d) | 0.007 | |||
| ≤2 | 79,635 (58.1) | 8042 (56.1) | 71,593 (58.3) | |
| 3–4 | 24,582 (17.9) | 2949 (20.6) | 21,633 (17.6) | |
| 5–10 | 19,015 (13.9) | 2065 (14.4) | 16,950 (13.8) | |
| 10+ | 11,122 (8.1) | 1000 (7.0) | 10,122 (8.2) | |
| Outdoors on weekends (hr/d) | <0.001 | |||
| ≤2 | 30,517 (22.3) | 3585 (25.0) | 26,932 (21.9) | |
| 3–4 | 41,500 (30.3) | 4422 (30.8) | 37,078 (30.2) | |
| 5–10 | 45,930 (33.5) | 4581 (32.0) | 41,349 (33.7) | |
| 10+ | 16,104 (11.7) | 1427 (10.0) | 14,677 (12.0) | |