Table 1.

Distribution and risk estimates for selected characteristics of cases and controls (King County, WA, 2002-2005)

Cases, n = 827 (%)Controls, n = 787 (%)Adjusted OR* (95% CI)
Age group
    35-4978 (9.4)76 (9.7)
    50-5485 (10.3)95 (12.1)
    55-59147 (17.8)149 (18.9)
    60-64182 (22)157 (19.9)
    65-69177 (21.4)164 (20.8)
    70-74158 (19.1)146 (18.6)
Race
    Caucasian711 (86)718 (91.2)1.00 (reference)
    African American116 (14)69 (8.8)1.79 (1.30-2.47)
First-degree relative with prostate cancer
    No635 (76.8)694 (88.2)1.00 (reference)
    Yes192 (23.2)93 (11.8)2.27 (1.73-2.98)
Number of PSA tests
    None182 (22)193 (24.5)1.00 (reference)
    1-2138 (16.7)144 (18.3)1.04 (0.76-1.43)
    3-4143 (17.3)112 (14.2)1.43 (1.03-1.99)
    ≥5312 (37.7)207 (26.3)1.70 (1.28-2.26)
    Unknown52 (6.3)131 (16.6)
Total vitamin D (μg/d)
    ≤6.9188 (22.7)190 (24.1)1.00 (reference)
    7.0-12.9220 (26.6)189 (24)1.18 (0.89-1.57)
    13.0-17.4211 (25.5)189 (24)1.12 (0.85-1.49)
    ≥17.5180 (21.8)190 (24.1)0.95 (0.72-1.27)
    Unknown28 (3.4)29 (3.7)
Stage of prostate cancer at diagnosis
    Local676 (81.7)
    Regional134 (16.2)
    Distant17 (2.1)
Gleason score at diagnosis
    2-6, 7 (3+4)674 (81.5)
    7 (4+3), 8-10148 (17.9)
    Unknown5 (0.6)
  • * Adjusted for age.

  • PSA tests done in the previous 5 y before reference date.

  • Total daily intake from diet and supplements.