Table 2.

BMI and HRs of incident gastric cancer and specifically noncardia gastric cancer among 73,133 Norwegians during 15.4 years of follow-up

BMI*Overall gastric cancer
Noncardia gastric cancer
Person-yearsnHRHR (95% CI)Person-yearsnHRHR (95% CI)
<18.511,83831.40.7 (0.1-5.2)11,83421.20.9 (0.1-6.7)
18.5-24.9§498,0651041.01.0497,872841.01.0
25.0-29.9309,5021101.01.0 (0.7-1.4)309,368921.01.1 (0.7-1.6)
≥30.086,340320.81.1 (0.7-1.8)86,318290.91.2 (0.7-2.1)
P for trend0.380.740.770.42
  • NOTE: Both sexes combined.

  • * Normal weight used as reference. BMI calculated as body weight (kg) divided by the square of body height (m2).

  • Results adjusted only for age.

  • Adjusted for age, recreational physical activity level, smoking, alcohol drinking, salt intake, and occupation.

  • § Reference category.

  • Physical activity score calculated from a weighted sum of frequency, intensity, and duration among participants who reported a physical activity frequency of once a week or more.