Table 1

Descriptive characteristics of the case-control sample

TraitControlsCasesComparison
Mean age in years (SD)61.0 (8.4)60.0 (6.0)χ2 = 0.058, df = 1, P = 0.809a
Range40–9142–82
Race
 Caucasian203 (84.9%)204 (86.1%)Fisher’s Exact test, P = 0.902
 African American29 (12.1%)28 (11.8%)
 Other7 (2.9%)5 (2.1%)
Mean PSA in ng/dl (SD)b1.2 (0.9)15.8 (49.3)χ2 = 234.03, df = 1, P < 0.0001a
Range0–3.90.2–590.0
Family history of CaP
 No181 (75.7%)138 (58.2%)Fisher’s Exact test, P = 0.0002
 Yes40 (16.7%)73 (30.8%)
 Unknown/Not reported18 (7.5%)26 (11.0%)
  • a From Kruskal-Wallis χ2 approximation.

  • b PSA was measured at time of diagnosis in cases and at most recent clinic visit in controls.