Table 1.

Baseline characteristics of prostate cancer cases and controls

CharacteristicsCases, n (%)Controls, n (%)Pa
Age at baseline0.99
 55–5933 (16.9)33 (16.9)
 60–6494 (48.2)95 (48.7)
 65–7068 (34.9)67 (34.4)
Year at blood draw1.00
 94–9599 (50.7)99 (50.7)
 96–9775 (38.5)75 (38.5)
 98–9921 (10.8)21 (10.8)
Family history of prostate cancer20 (10.3)9 (4.6)0.03
Diabetes7 (3.6)15 (7.8)0.08
BMI (kg/m2)0.64
 <2549 (25.4)53 (27.3)
 25–29.99103 (53.4)95 (49)
 ≥3041 (21.2)46 (23.7)
Smoking status0.02
 Never98 (50.2)64 (32.8)
 Former85 (43.8)112 (57.4)
 Current11 (5.7)19 (9.7)
Median (IQR) PSA at blood draw (ng/mL)3.45 (2.54)0.96 (1.01)<0.0001
  • aχ2 test for categorical variables and the two-sided Wilcoxon rank sum test for PSA as a continuous variable.