Table 4

Odds ratios between serum palmitic acid and linoleic acid and prostate cancer risk by the supplementation groups

ATaNo ATP for interaction
Odds ratio (95% CI)bOdds ratio (95% CI)b
Palmitic acid, C16:0
 Quartile 11.001.00
 Quartile 20.74 (0.24–2.30)1.12 (0.55–2.29)
 Quartile 32.47 (0.81–7.54)1.19 (0.57–2.47)
 Quartile 44.02 (1.04–15.6)0.83 (0.39–1.76)
P for trend0.010.690.05
Linoleic acid, C18:2 n-6
 Quartile 11.001.00
 Quartile 20.27 (0.07–1.05)1.27 (0.62–2.62)
 Quartile 30.38 (0.12–1.20)0.87 (0.45–1.67)
 Quartile 40.17 (0.04–0.68)1.30 (0.64–2.60)
P for trend0.020.720.03
  • a AT, men received supplementation with α-tocopherol; No AT, men received no supplementation with α-tocopherol; CI, confidence interval.

  • b Unadjusted values. The results were similar after adjustment for area of residence (urban/rural), education, body mass index, alcohol consumption, and the number of years of smoking.