Table 1.
Age-standardized characteristics of the study population at baseline in 1990 by family history of PCa, the Health Professionals Follow-up Study
| PCa family history | ||
|---|---|---|
| Characteristic | No | Yes |
| N | 38,537 | 5,589 |
| Mean age, years (SD)a | 58.0 (9.6) | 58.2 (9.5) |
| Caucasian | 95.8% | 96.5% |
| Mean height, inches (SD) | 70.1 (2.7) | 70.2 (2.7) |
| Mean BMI at age 21 years, kg/m2 (SD) | 23.0 (2.9) | 22.9 (2.9) |
| Mean BMI, kg/m2 (SD) | 25.7 (3.4) | 25.7 (3.4) |
| Top quintile of physical activity (≥29.7 MET hours/week) | 19.9% | 21.0% |
| Smoking status | ||
| Never smoker | 44.3% | 46.6% |
| Past smoker quit >10 years | 31.7% | 31.2% |
| Past smoker quit ≤10 years | 9.6% | 8.7% |
| Current smoker | 8.3% | 8.0% |
| Smoking unknown | 6.1% | 5.5% |
| History of diabetes | 4.4% | 4.0% |
| PSA screeningb | ||
| 1994 | 38.1% | 48.2% |
| 2004 | 67.7% | 75.2% |
| Mean total energy intake, kcal/day (SD) | 1,953 (558) | 1,972 (554) |
| Mean tomato sauce intake, servings/day (SD) | 0.1 (0.1) | 0.1 (0.1) |
| Mean coffee intake, cups/day (SD) | 1.9 (1.7) | 1.9 (1.7) |
| Father with PCa | – | 80.6% |
| Brother(s) with PCa | – | 23.6% |
| Earliest age at family member PCa diagnosis | ||
| Age <60 years | – | 7.9% |
| Age 60+ years | – | 60.0% |
| Age unknown | – | 32.1% |
Abbreviations: BMI, body mass index; MET, metabolic equivalent task; PCa, prostate cancer; PSA, prostate-specific antigen; SD, standard deviation
a
Value is not age-standardized
b
Reported having a PSA test in the two years before the questionnaire date