Table II.
Characteristics of study population by case-control status
| Characteristics | Cases (n=585) No. (%) |
Controls (n=585) No. (%) |
P-value |
|---|---|---|---|
| Mean age in years ± SD | 70.6 ± 9.1 | 66.3 ± 8.1 | 0.99 |
| Smokinga | 0.05 | ||
| Never | 221 (37.8) | 254 (43.4) | |
| Ever | 364 (62.2) | 331 (56.6) | |
| Obesityb | 0.63 | ||
| BMI <30 | 448 (76.6) | 455 (77.8) | |
| BMI ≥30 | 137 (23.4) | 130 (22.2) | |
| Gleason Score | |||
| ≤4 | 48 (8.3) | ||
| 5-7 | 468 (80.6) | ||
| ≥8 | 65 (11.2) | ||
a
Includes cigarettes, cigars, and/or pipe use.
b
Obesity status at study recruitment. Cases and controls were matched on body mass index.