Table 1.

Baseline characteristics of cases and controls in the EPIC-Heidelberg nested case-control study (n = 740)

Cases (n = 248)Controls (n = 492)
MeanSDMeanSD
Age (y)58.1±4.858.1±4.8
BMI (kg/m2)27.3±3.627.3±3.4
NPercentNPercent
Smoking status
    Never9939.916633.7
    Former11245.224149.0
    Current3714.98517.3
Educational attainment
    No/primary school8935.915832.1
    Secondary/technical school8233.115331.1
    University7731.118136.8
Positive family history of prostate cancer187.391.8
Participation in PSA screening*5823.48817.9
Vigorous physical activity
    None8835.520140.9
    ≤2 h/wk7931.916333.1
    >2 h/wk8132.712826.0
Alcohol intake (g/d)
    <54116.59419.1
    5-155421.812425.2
    15-306727.011222.8
    ≥308634.716232.9
NMeanSDNMeanSD
Serum selenium (μg/L)24486.2±14.249087.7±13.4
Serum SePP (mg/L)2472.88±0.514912.92±0.52
Serum GPX (units/L)248647.6±112.9492656.7±110.2
  • *In the period before the index case was diagnosed with PCa.