| OID cases | Control subjects | p value |
---|---|---|---|
Number of subjects | 92 | 920 | Â |
Mean age (year)s | 58.2 | 58.1 | 0.97a |
Ethnicity | Â | Â | 0.0018b |
 White | 48 (52.2) | 378 (41.1) |  |
 African-American | 30 (32.6) | 207 (22.5) |  |
 Other | 0 (0) | 6 (0.6) |  |
 Unknown | 14 (15.2) | 329 (35.8) |  |
Medical characteristics | Â | Â | Â |
 Diabetes | 24 (26.1) | 95 (10.3) | <0.0001b |
 Lipid metabolism disorders | 7 (7.6) | 53 (5.8) | 0.47b |
 Hypertension | 32 (34.8) | 185 (20.1) | 0.0011b |
 Cardiovascular disease | 12 (13.0) | 141 (15.3) | 0.56b |
 Cerebrovascular disease | 2 (2.2) | 47 (5.1) | 0.21b |
 Arterial disease | 3 (3.3) | 32 (3.5) | 0.91b |