Table 1. Demographics and lifestyle characteristics of cases and controls of the Prostate Cancer Prevention Trial participants in the treatment arm (n = 1273).
| Control (n = 676) | Case (n = 597) | p-value | |
|---|---|---|---|
| Mean (SD) | |||
| Age (y) | 63.8 (5.6) | 64.1 (5.8) | NA* |
| BMI (kg/m2) | 27.7 (4.1) | 27.5 (3.8) | 0.54 |
| Waist circumference, cm | 102.0 (11.1) | 101.8 (10.3) | 0.72 |
| Waist:hip ratio | 1.0 (0.1) | 1.0 (0.1) | 0.54 |
| Alcohol intake, g/d | 9.1 (13.9) | 10.1 (15.1) | 0.23 |
| Smoking, pack-years | 14.9 (16.8) | 14.3 (16.2) | 0.58 |
| Finasteride concentrations, ng/mL | 30.05 (19.72) | 29.35 (19.35) | 0.53 |
| n (%) | |||
| Diabetes | 49 (7.2) | 30 (5.0) | 0.10 |
| Family history of prostate cancer | 147 (21.7) | 135 (22.6) | NA* |
| Race | NA* | ||
| White (Non-Hispanic) | 503 (74.4) | 556 (93.1) | |
| Black | 91 (13.5) | 27 (4.5) | |
| Other | 82 (12.1) | 14 (2.3) | |
| BMI (kg/m2) | 0.96 | ||
| Normal (<25) | 181 (27.0) | 156 (26.4) | |
| Overweight (25 to <30) | 333 (49.6) | 298 (50.3) | |
| Obese (> = 30) | 157 (23.4) | 138 (23.3) | |
| Physical Activity | 0.52 | ||
| Sedentary | 130 (19.3) | 117 (19.7) | |
| Light | 263 (39.1) | 249 (41.8) | |
| Moderate | 213 (31.7) | 183 (30.8) | |
| Active | 66 (9.8) | 46 (7.7) | |
| Alcohol Intake | 0.71 | ||
| Nondrinker | 159 (23.5) | 141 (23.6) | |
| <30 g/d | 459 (67.9) | 397 (66.5) | |
| > = 30 g/d | 58 (8.6) | 59 (9.9) | |
| Smoking Status | 0.21 | ||
| Never Smoker | 237 (35.1) | 204 (34.2) | |
| Current Smoker | 57 (8.4) | 36 (6.0) | |
| Past Smoker | 382 (56.5) | 357 (59.8) | |
| Education | 0.02 | ||
| High school or less | 145 (21.5) | 106 (17.8) | |
| Some college | 210 (31.1) | 161 (27.0) | |
| Graduate/professional school | 320 (47.4) | 330 (55.3) | |
* By study design, controls were frequency matched to cases based on age and family history, and oversampled to include all non-whites.