Table 1

Adjusted ORsa and 95% confidence intervals (CIs) for stomach cancer in relation to fermented and nonfermented soyfoods, Shanghai, China (1988–1989)

Soyfood intakebMenWomen
ControlsCasesOR (95% CI)ControlsCasesOR (95% CI)
Fermented bean curd (frequency/month)
 02702751.002261131.00
 ≤22322371.01 (0.75–1.36)1971181.36 (0.90–2.05)
 2.1–4.91621680.93 (0.66–1.31)113721.19 (0.79–1.80)
 5+1551380.76 (0.53–1.10)96761.45 (0.91–2.32)
P for trend0.170.18
Nonfermented soyfoodsc (frequency/month)
 <61421831.00160961.00
 6.0–9.92422880.94 (0.70–1.26)1911221.13 (0.79–1.62)
 10.0–19.92291880.74 (0.54–1.01)128861.29 (0.87–1.92)
 20.0+2061590.72 (0.52–1.00)153751.00 (0.67–1.49)
P for trend0.020.83
  • a ORs adjusted for age, income, education, and (men only) cigarette smoking and alcohol drinking, with additional adjustment for salted foods and salt preference (fermented soyfoods) and fresh fruits and vegetables (nonfermented soyfoods).

  • b The cut points for intake levels were based on approximate distributions among all of the controls.

  • c Nonfermented soyfoods include soybean curd, soybean milk, and other soybean products.