Table 1 Demographics of the cases and controls
|  | Cases (n = 1861) | Controls (n = 9305) |
|---|---|---|
Mean age | 79.8 | 79.5 |
Gender | ||
 Female | 62 (3.3%) | 310 (3.3%) |
 Male | 1799 (96.7%) | 8995 (96.7%) |
Race | ||
 Black | 112 (6.0%) | 428 (4.6%) |
 White | 1434 (77.1%) | 7099 (76.3%) |
 Other | 64 (3.4%) | 245 (2.6%) |
 Unknown | 251 (13.5%) | 1533 (16.5%) |
Ethnicity | ||
 Hispanic | 28 (1.5%) | 135 (1.5%) |
 Non-Hispanic | 1679 (90.2%) | 8170 (87.8%) |
 Unknown | 154 (8.3%) | 1000 (10.7%) |