Table 1 Demographic and clinical characteristics of episodes of incident myocardial infarction* (MI) in allopurinol users
| Â | Â | Incident MI during follow-up | P value | |
|---|---|---|---|---|
All observations | No | Yes | Â | |
Total episodes, n | 29,298 | 27,754 | 1544 | Â |
Age (years), mean (SD) | 76.6 (7.4) | 76.5 (7.4) | 78.1 (7.6) | <0.0001 |
Gender, n (%) | Â | Â | Â | 0.57 |
 Male | 14,502 (49.5) | 13,727 (49.5) | 775 (50.2) |  |
 Female | 14,796 (50.5) | 14,027 (50.5) | 769 (49.8) |  |
Race/ethnicity, n (%) | Â | Â | Â | 0.43 |
 White | 23,131 (79.0) | 21,922 (79.0) | 1209 (78.3) |  |
 Black | 3583 (12.2) | 3,374 (12.2) | 209 (13.5) |  |
 Hispanic | 613 (2.1) | 578 (2.1) | 35 (2.3) |  |
 Asian | 1,281 (4.4) | 1,224 (4.4) | 57 (3.7) |  |
 Native American | 100 (0.3) | 93 (0.3) | 7 (0.5) |  |
 Other/unknown | 590 (2.0) | 563 (2.0) | 27 (1.7) |  |
Region, n (%) | Â | Â | Â | <0.0001 |
 Northeast | 4736 (16.2) | 4428 (16.0) | 308 (20.0) |  |
 Midwest | 7409 (25.3) | 7003 (25.2) | 406 (26.3) |  |
 South | 11,797 (40.3) | 11,220 (40.4) | 577 (37.4) |  |
 West | 5356 (18.3) | 5103 (18.4) | 253 (16.4) |  |
Charlson-Romano comorbidity Index Score, mean (SD) | 3.65 (3.23) | 3.59 (3.21) | 4.79 (3.41) | <0.0001 |