Table 6

IGF-I multivariate ORs for prostate cancer by serum 3α-diol G level

nQuartiles of IGF-IaPtrend
Q1Q2Q3Q4
3α-diol G <518 ng/dl
 OR (95% CI)a,b1.000.88 (0.37–2.09)1.00 (0.40–2.48)1.82 (0.67–4.95)0.21
n (cases/controls)24/3920/3921/3927/32
3α-diol G ≥518 ng/dl
 OR (95% CI)a,b1.001.93 (0.30–12.28)5.20 (0.80–33.69)12.29 (1.83–82.39)0.004
n (cases/controls)2/344/376/3620/43
  • a See Table 4<$REFLINK> for IGF-I, IGFBP-1, and IGFBP-3 quartile ranges.

  • b Adjusted for age (categories specified in Table 4<$REFLINK> ), IGFBP-1 (quartiles), and IGFBP-3 (quartiles).