Table 1.
Patient characteristics n (%)
| Category | Group 1 (n = 63) | Group 2 (n = 243) | P |
| Sex | |||
| Male | 42 (67) | 198 (82) | < 0.05 |
| Female | 21 (33) | 45 (18) | |
| Age (yr) | |||
| Median (range) | 66 (18–87) | 61 (23–87) | |
| < 30 | 5 (8) | 3 (1) | < 0.01 |
| 30-39.9 | 3 (5) | 10 (4) | |
| 40-49.9 | 6 (10) | 35 (14) | |
| 50-59.9 | 9 (14) | 65 (27) | |
| 60-69.9 | 10 (16) | 76 (31) | |
| 70-79.9 | 17 (27) | 44 (18) | |
| > 80 | 8 (13) | 7 (3) | |
| Unknown | 5 (8) | 3 (1) | |
| Race | |||
| Asian | 1 (2) | 27 (11) | < 0.05 |
| African American | 8 (31) | 66 (27) | |
| Caucasian | 51 (81) | 125 (51) | |
| Hispanic | 1 (2) | 8 (3) | |
| Other | 1 (1) | 12 (5) | |
| Unknown | 1 (1) | 5 (2) | |
| Country | |||
| US born | 58 (92) | 201 (83) | |
| Immigrant | 2 (3) | 28 (11) | |
| Foreign visitor | 3 (5) | 14 (6) | |