Table 4.

OR and corresponding 95% CIs for RCC among 767 cases and 1,534 controls for the highest compared with the lowest quintile of flavonoid intake in strata of selected covariates (Italy, 1992-2004)

FlavonoidsOR* (95% CI)
Sex
Age (y)
Smoking habit
BMI (kg/m2)
MenWomen<60≥60Never smokerEver smoker<25≥25
Isoflavones0.90 (0.61-1.33)0.51 (0.30-0.88)0.69 (0.42-1.13)0.84 (0.57-1.26)0.96 (0.58-1.60)0.69 (0.46-1.04)0.72 (0.43-1.22)0.80 (0.54-1.20)
Anthocyanidins0.95 (0.54-1.65)1.43 (0.56-3.64)0.97 (0.49-1.92)0.93 (0.51-1.71)1.65 (0.75-3.65)0.65 (0.36-1.14)0.78 (0.37-1.63)1.00 (0.56-1.78)
Flavan-3-ols0.88 (0.57-1.36)0.64 (0.37-1.08)0.64 (0.39-1.07)0.87 (0.56-1.34)0.93 (0.57-1.52)0.65 (0.42-1.02)0.88 (0.53-1.47)0.65 (0.42-0.99)
Flavanones0.90 (0.62-1.30)0.90 (0.54-1.50)0.84 (0.52-1.36)0.98 (0.67-1.44)1.09 (0.67-1.77)0.78 (0.53-1.15)0.85 (0.50-1.43)0.94 (0.65-1.36)
Flavones0.83 (0.56-1.22)0.48 (0.28-0.83)0.65 (0.40-1.06)0.71 (0.47-1.07)1.02 (0.62-1.68)0.56 (0.37-0.85)0.53 (0.31-0.90)0.72 (0.48-1.07)
Flavonols0.82 (0.54-1.26)0.47 (0.27-0.83)0.58 (0.35-0.97)0.78 (0.51-1.19)0.80 (0.49-1.30)0.60 (0.38-0.95)0.82 (0.48-1.41)0.58 (0.38-0.89)
Total flavonoids0.85 (0.55-1.31)0.78 (0.45-1.35)0.70 (0.42-1.16)0.91 (0.59-1.40)1.21 (0.73-2.02)0.56 (0.36-0.88)0.91 (0.53-1.56)0.70 (0.46-1.07)
  • * Estimates from conditional logistic regression conditioned on sex, age, and study center and adjusted for period of interview, education, tobacco smoking, alcohol drinking, BMI, occupational physical activity, family history of kidney cancer, and total energy intake.