Table 2

Matched set comparison of plasma antioxidant levels in prostate cancer cases versus controls: all cases and aggressive cases only

Median plasma levela (ng/ml)
All cases (n = 578 sets)Aggressive cancer (n = 259 sets)
CasesControlsPbCasesControlsP
α-Carotene55.857.40.4657.957.40.89
β-Cryptoxanthin60.765.40.0760.166.00.15
Lutein102.4103.00.8098.097.00.74
Lycopene369.2388.00.04356.3385.00.05
α-Tocopherol10,80911,0680.5610,02011,1600.17
γ-Tocopherol1,6591,7030.501,5701,7000.26
Retinol580.3565.60.02570.4565.10.66
  • a Antioxidant concentrations were log-transformed for parametric statistical testing.

  • b P are based on paired t test for nonindependent samples.