Table 1.

Characteristics of PC cases and controls

Testing set
Validation set
Control (N = 615)PC case (N = 474)PControl (N = 487)PC case (N = 481)P
Age59.8 ± 12.265.8 ± 10.4<0.00165.3 ± 10.566.3 ± 10.90.16
Gender0.0180.50
    Female292 (47%)191 (40%)217 (45%)204 (42%)
    Male323 (53%)283 (60%)270 (55%)277 (58%)
Smoking history0.011<0.001
    Never smoker297 (49%)193 (41%)216 (50%)167 (35%)
    Smoker315 (51%)280 (59%)216 (50%)304 (65%)
Questionnaire completed
    No50 (10%)149 (31%)
    Yes437 (90%)332 (69%)
Body mass index28.2 ± 5.627.2 ± 4.627.9 ± 5.00.06
Diabetes mellitus (>2 y)<0.001
    No329 (90%)418 (96%)287 (86%)
    Yes35 (10%)17 (4%)45 (14%)