Table 3.
Patient characteristics
| Factor | N | Male (n [%]) | Female (n [%]) | P |
|---|---|---|---|---|
| Race | 0.12 | |||
| nonblack | 1323 | 577 (86.8) | 746 (83.9) | |
| black | 231 | 88 (13.2) | 143 (16.1) | |
| Age (yr) | <0.001 | |||
| ≤45 | 1050 | 493 (74.1) | 557 (62.7) | |
| >45 | 504 | 172 (25.9) | 332 (37.3) | |
| Decades | 0.24 | |||
| 1970 | 78 | 41 (6.2) | 37 (4.2) | |
| 1980 | 355 | 157 (23.6) | 198 (22.3) | |
| 1990 | 445 | 190 (28.6) | 255 (28.7) | |
| 2000 | 676 | 277 (41.7) | 399 (44.9) | |
| Rank for V (Watson) | <0.001 | |||
| first quintile (>23.80, ≤30.70) | 310 | 0 (0.00) | 310 (34.90) | |
| second quintile (>30.70, ≤34.12) | 311 | 4 (0.60) | 307 (34.50) | |
| third quintile (>34.12, ≤40.30) | 311 | 68 (10.20) | 243 (27.30) | |
| fourth quintile (>40.30, ≤46.72) | 311 | 283 (42.60) | 28 (3.20) | |
| fifth quintile (>46.72, ≤69.80) | 311 | 310 (46.60) | 1 (0.11) |
χ2 tests were used to test for differences by gender.