Table 3

ORs and 95% CIs for prostate cancer in relation to tofu, combined soy foods, genistein, and daidzein, China, 1989–1992

Cases (n)Controls (n)ORa95% CI
Tofu (g/day)b
 <14.351981.00
 14.3–34.526620.770.45–1.29
 >34.531760.580.35–0.96
(P for linear trend = 0.032)
Combined soy foods (g/day)c
 <27.532571.00
 27.5–52.925620.640.36–1.16
 52.9–111.831590.770.44–1.37
 >111.820580.510.28–0.95
(P for linear trend = 0.061)
Genistein (mg/day)c
 <17.932551.00
 17.9–34.520550.600.33–1.01
 34.5–62.027580.700.40–1.23
 >62.021570.530.29–0.97
(P for linear trend = 0.058)
Daidzein (mg/day)c
 <10.029541.00
 10.0–19.121560.670.37–1.21
 19.1–36.329580.790.45–1.38
 >36.321570.560.31–1.04
(P for linear trend = 0.116)
  • a Adjusted for total calories and age.

  • b ORs calculated by tertile.

  • c ORs calculated by quartile.