Table 1.
Select characteristics of 563 study participants
| Characteristic | Participants N=563 |
||
|---|---|---|---|
| n | % | ||
| Age at enrollment (years) | |||
| 55–59 | 96 | 16.8 | |
| 60–64 | 192 | 33.7 | |
| 65–69 | 180 | 31.6 | |
| 70–74 | 95 | 16.7 | |
| Education level | |||
| Less than high school | 46 | 8.1 | |
| Completed high school | 99 | 17.4 | |
| Some college or vocational training | 191 | 33.5 | |
| College and above | 227 | 39.8 | |
| Family history of prostate cancer | |||
| No | 524 | 92.1 | |
| Yes | 31 | 5.4 | |
| Cigarette smoking status | |||
| Never | 215 | 37.7 | |
| Former | 293 | 51.4 | |
| Current | 55 | 9.6 | |
| Body mass index (BMI) | |||
| Normal (18.5–24.9) | 145 | 25.6 | |
| Overweight (25–29.9) | 288 | 50.8 | |
| Obese (>30) | 127 | 22.4 | |
| Serum Marker | Mean | SD | Range |
| Total testosterone (nmol/L) | 17.7 | 8.6 | 0.6 – 60.0 |
| Bioavailable testosterone (nmol/L) | 4.9 | 1.9 | 0.2 – 14.5 |
| 4-Androstene-3,17-dione (Androstenedione; ng/dL) | 126.1 | 44.3 | 29.6 – 301.6 |
| 5α-androstane-3α,17β-diol glucuronide (3αdiol G; ng/dL) | 828.6 | 585.6 | 67.6 – 5346.7 |
| Sex hormone-binding globulin (SHBG; nmol/L) | 48.7 | 22.9 | 13.1 – 152.3 |