Table 4

Prostate cancer risk according to quintiles of intake of legumes

Food item or groupQuintileP for trend
1 (low)2345 (high)
Soyfoods
Quintile range (g/day)00.1–0.50.6–18.018.1–39.4>39.4
OR (95% CI)a
All cases/all controlsb1.000.75 (0.60–0.94)0.75 (0.55–1.02)0.85 (0.61–1.19)0.62 (0.44–0.89)0.06
All cases/normal controlsc1.000.81 (0.61–1.08)0.71 (0.49–1.01)0.88 (0.59–1.32)0.64 (0.42–0.98)0.17
Advanced cases/all controlsd1.000.65 (0.46–0.92)0.75 (0.47–1.18)0.95 (0.58–1.56)0.59 (0.35–1.00)0.13
Legumes (excluding soyfoods)
Quintile range (g/day)≤2.62.7–10.310.4–23.123.2–51.5>51.5
OR (95% CI)a
All cases/all controlsb1.000.87 (0.69–1.09)0.83 (0.66–1.04)0.87 (0.69–1.10)0.68 (0.53–0.88)0.01
All cases/normal controlsc1.000.84 (0.64–1.11)0.84 (0.63–1.11)0.84 (0.63–1.11)0.62 (0.46–0.86)0.006
Advanced cases/all controlsd1.000.94 (0.68–1.30)0.88 (0.63–1.22)1.05 (0.75–1.46)0.73 (0.50–1.07)0.11
All legumes
Quintile range (g/day)≤10.010.1–23.723.8–43.643.7–81.0>81.0
OR (95% CI)a
All cases/all controlsb1.000.89 (0.71–1.10)0.85 (0.68–1.07)0.81 (0.64–1.01)0.62 (0.49–0.80)0.0002
All cases/normal controlsc1.000.91 (0.69–1.20)0.83 (0.63–1.10)0.77 (0.58–1.02)0.59 (0.44–0.80)0.0004
Advanced cases/all controlsd1.001.02 (0.74–1.41)1.00 (0.72–1.38)0.94 (0.67–1.31)0.74 (0.52–1.06)0.04
  • a OR (95% CI), adjusted for age, education, ethnicity, geographic area, and calories.

  • b Number of cases, 1619; number of controls, 1618.

  • c Control subjects with normal PSA values; n = 847.

  • d See “Materials and Methods” for definition of “advanced”; n = 514.