Table 1.
Demographic and medical characteristics among ARM cases and non-ARM controls. (Figures are numbers (%) except where otherwise indicated)
| Cases (n=550) | Controls (n=5500) | p Value | |
| Demographic characteristics | |||
| Age (years), mean (SD) | 72.9 (6.8) | 73.2 (6.7) | 0.80 |
| Race | <0.0001 | ||
| White | 459 (83.5) | 2509 (45.6) | |
| African-American | 22 (4.0) | 864 (15.7) | |
| Other | 5 (1.0) | 20 (0.4) | |
| Unknown | 64 (11.6) | 2107 (38.3) | |
| Medical characteristics | |||
| Diabetes | 124 (22.6) | 774 (14.1) | <0.0001 |
| Lipid metabolism disorders | 58 (10.6) | 624 (11.4) | 0.57 |
| Hypertension | 310 (56.4) | 2128 (38.7) | <0.0001 |
| Cardiovascular disease | 167 (30.4) | 1302 (23.7) | 0.0005 |
| Cerebrovascular disease | 26 (4.7) | 472 (8.6) | 0.0017 |
| Arterial disease | 35 (6.4) | 433 (7.9) | 0.21 |