Table 1.
Different characteristics of co-morbidities between the study and control group.
| Baseline Characteristics | Study N = 6076 |
Control N = 24,304 |
p Value |
|---|---|---|---|
| Age | 1.0000 | ||
| <40 | 2283 (37.57%) | 9132 (37.57%) | |
| 40–59 | 2637 (43.4%) | 10,548 (43.4%) | |
| 60–79 | 1102 (18.14%) | 4408 (18.14%) | |
| ≥80 | 54 (0.89%) | 216 (0.89%) | |
| Gender | 1.0000 | ||
| Male | 3914 (64.42%) | 15,656 (64.42%) | |
| Female | 2162 (35.58%) | 8648 (35.58%) | |
| Co-morbidities | |||
| Hypertension | 1597 (26.28%) | 5362 (22.06%) | <0.0001 |
| Diabetes mellitus | 797 (13.12%) | 2681 (11.03%) | <0.0001 |
| Ischemic heart disease | 592 (9.74%) | 1812 (7.46%) | <0.0001 |
| Hyperlipidemia | 1403 (23.09%) | 4443 (18.28%) | <0.0001 |
| Heart failure | 214 (3.52%) | 645 (2.65%) | 0.0003 |
| Peripheral vascular disease | 159 (2.62%) | 479 (1.97%) | 0.0017 |
| Cerebrovascular disease | 410 (6.75%) | 1307 (5.38%) | <0.0001 |
| Dementia | 34 (0.56%) | 152 (0.63%) | 0.5563 |
| Chronic pulmonary diseases | 1664 (27.39%) | 3833 (15.77%) | <0.0001 |
| Rheumatic disease | 138 (2.27%) | 377 (1.55%) | 0.0001 |
| Peptic ulcer disease | 1780 (29.3%) | 5177 (21.3%) | <0.0001 |
| Liver disease | 1536 (25.28%) | 4519 (18.59%) | <0.0001 |
| Hemiplegia or paraplegia | 41 (0.67%) | 227 (0.93%) | 0.0533 |
| Keratopathy | 424 (6.98%) | 1277 (5.25%) | <0.0001 |
| Uveitis | 56 (0.92%) | 158 (0.65%) | 0.0236 |
| Glaucoma | 120 (1.97%) | 335 (1.38%) | 0.0006 |
| AMD | 51 (0.84%) | 141 (0.58%) | 0.0226 |
AMD = age-related macular degeneration.