Null Results in Brief Plasma Leptin Is Not Associated with Prostate Cancer Risk 1

Leptin unadjusted 1.00 (ref) 1.0 (0.6–1.6) 0.7 (0.4–1.1) 0.9 (0.6–1.6) Leptin adjusted a 1.00 (ref) 1.0 (0.6–1.7) 0.7 (0.4–1.1) 0.9 (0.6–1.6) Leptin Age median b 1.00 (ref) 1.4 (0.7–2.6) 0.8 (0.4–1.7) 1.4 (0.7–2.7) Age median 1.00 (ref) 0.7 (0.3–1.4) 0.5 (0.2–1.1) 0.7 (0.3–1.3) F-U median c 1.00 (ref) 0.7 (0.3–1.5) 0.8 (0.4–1.5) 0.7 (0.4–1.4) F-U median 1.00 1.4 (0.7–2.6) 0.5 (0.2–1.1) 1.2 (0.6–2.4) a Adjusted for serum levels of testosterone, estradiol, and SHBG. b Subgroup analysis in two groups according to age. The cut-point was the median