Table 1

Associations between cigarette smoking, BMI, and high blood pressure and RCC

Cases (%)Controls (%)OR95% CI
Cigarette smoking (tertiles pack-years)a
Never smoker52 (30.2)215 (35.1)1.0
Low (≤17)39 (22.7)134 (21.9)1.20.7–2.1
Middle (>17–39)37 (21.5)131 (21.4)1.30.7–2.3
High (>39)44 (25.6)132 (21.6)1.81.0–3.2
BMI (tertiles)b
Low43 (24.9)205 (33.4)1.0
Middle62 (35.8)206 (33.6)1.40.9–2.4
High68 (39.3)203 (33.1)1.71.0–2.9
High blood pressurec
No91 (52.9)56 (81.2)1.0
Yes81 (47.1)13 (18.8)4.82.2–10.3
  • a ORs adjusted for age, sex, county, and BMI. Test for trend across tertiles pack-years, P = 0.03.

  • b ORs adjusted for age, sex, county, and pack-years smoking. Cut points for tertiles of BMI were 25.0 and 27.4 for males and 22.9 and 26.4 for females. Test for trend across tertiles BMI, P = 0.04.

  • c Self-reported history of diagnosis of high blood pressure. Information was available for only a subset of control subjects, n = 69. OR adjusted for age, sex, county, BMI, and pack-years smoking.