Table 5.

Risk of kidney cancer associated with BMI by total caloric intake (kcals/wk; tertiles), Canada, 1994-1997

BMI (kg/m2)Low caloric intake
Medium caloric intake
High caloric intake
Pinteraction
CasesControlsOR (95% CI)*CasesControlsOR (95% CI)*CasesControlsOR (95% CI)*
Women
    Renal cell
        <25.0512801.00322730.63 (0.39-1.02)352690.76 (0.48-1.21)0.021
        25.0 to <30.0341331.39 (0.84-2.31)361531.27 (0.77-2.09)351341.46 (0.89-2.40)
        ≥30.017721.25 (0.66-2.36)25612.51 (1.40-4.50)36812.56 (1.54-4.24)
        Ptrend0.320.0040.0002
    Non–renal cell
        <25.072801.0072732.81 (0.70-11.32)92693.56 (0.84-15.15)0.99
        25.0 to <30.061332.86 (0.75-10.87)91533.09 (0.79-12.14)81346.23 (1.63-23.76)
        ≥30.04724.56 (0.92-22.54)4619.11 (2.20-37.73)6817.19 (1.69-30.66)
        Ptrend0.050.0030.002
Men
    Renal cell
        <25.0272211.00312051.37 (0.77-2.42)292131.42 (0.78-2.59)0.62
        25.0 to <30.0632492.22 (1.34-3.66)642662.06 (1.23-3.46)812373.52 (2.07-5.96)
        ≥30.025703.43 (1.80-6.54)22722.65 (1.38-5.07)32943.55 (1.91-6.58)
        Ptrend<0.00010.0006<0.0001
    Non–renal cell
        <25.032211.0072051.08 (0.37-3.19)72131.39 (0.50-3.84)0.52
        25.0 to <30.0102492.17 (0.66-7.12)92662.10 (0.74-5.95)152372.16 (0.74-6.28)
        ≥30.04702.15 (0.58-7.95)7722.51 (0.68-9.21)7942.87 (0.91-9.07)
        Ptrend0.190.0790.045
  • * OR adjusted for age, province, education, total recreational physical activity, vegetable intake, smoking pack-years, and self-reported exposure to pesticides, herbicides, vinyl chloride, benzidine, benzene, mineral or cutting oil, and dyestuffs.