Table 2.

Geometric meana (95% CI) of serum concentrations of retinol and carotenoids among prostate cancer cases and controls by treatment arm, in the PCPT

ControlCaseGleason 2–6Gleason 7–10
Serum concentration (μg/dL)Mean (95% CI)Mean (95% CI)Mean (95% CI)Mean (95% CI)
Placebo
 Retinol0.67 (0.66–0.68)0.68 (0.67–0.69)0.68 (0.67–0.69)0.69 (0.67–0.71)
 α-Carotene0.04 (0.04–0.05)0.05 (0.05–0.05)b0.05 (0.05–0.05)b0.05 (0.04–0.05)
 β-Carotene0.23 (0.22–0.24)0.24 (0.23–0.25)b0.24 (0.23–0.26)b0.23 (0.21–0.26)
 β-Cryptoxanthin0.08 (0.08–0.09)0.08 (0.08–0.09)0.09 (0.08–0.09)0.08 (0.08–0.09)
Finasteride
 Retinol0.68 (0.67–0.69)0.67 (0.66–0.68)0.68 (0.67–0.69)0.67 (0.65–0.68)
 α-Carotene0.05 (0.04–0.05)0.05 (0.04–0.05)0.05 (0.04–0.05)0.04 (0.04–0.05)
 β-Carotene0.23 (0.22–0.25)0.24 (0.23–0.25)0.24 (0.22–0.26)0.23 (0.21–0.26)
 β-Cryptoxanthin0.08 (0.08–0.09)0.08 (0.08–0.09)0.09 (0.08–0.09)0.08 (0.08–0.09)
  • aGeometric least squares means, adjusted for age, race, and family history.

  • bP < 0.05.