Table 4.

Summary score of physical activity and risk of overall gastric cancer, stratified for BMI

Summary score*BMI ≤ 25

BMI ≥ 25

Person-yearsHR (95% CI)Person-yearsHR (95 % CI)
No activity42,5541.044,9831.0
Low118,0570.7 (0.3-1.4)94,8390.7 (0.4-1.3)
Moderate108,3910.6 (0.3-1.1)94,4270.6 (0.3-1.0)
High141,9120.4 (0.2-0.8)84,5250.7 (0.4-1.3)
P for trend0.010.19
  • NOTE: BMI calculated as body weight (kg) divided by the square of body height (m2).

  • * 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.

  • Adjusted for age, BMI, smoking, alcohol drinking, salt intake, and occupation.

  • Reference category.