Table 5.

HR of breast cancer among the most physically active group compared with the rest of the women by subgroup of menopausal status and BMI in the JACC study

SubgroupAge adjusted
Multivariate*
HR (95% CI)HR (95% CI)
Menopausal status
    Premenopausal0.14 (0.02 – 0.97)0.13 (0.02 – 0.91)
    Postmenopausal0.53 (0.29 – 0.96)0.53 (0.29 – 0.96)
    P for interaction0.5240.528
BMI (kg/m2)
    <240.43 (0.20 – 0.91)0.42 (0.19 – 0.90)
    ≥240.45 (0.18 – 1.10)0.44 (0.18 – 1.09)
    P for interaction0.9400.949
  • * Adjusted for age, BMI, alcohol drinking, age at menarche, education level, parity, age at birth of first child, use of exogenous female hormone, family history of breast cancer in a first-degree relative, menopausal status, and menopausal age for postmenopausal women.