↵cAdjusted for age, race, education, BMI (kg/m2), weight change, alcohol use, smoking status, PMH use, number of live births, age at first live birth, age at menopause, family history of breast cancer, breast cysts, hysterectomy, oophorectomy, and mammogram within last year.
↵dWalking in addition to other recreational activities.
↵eAlso adjusted for MET expenditure from total recreational activities.
↵fWomen reporting no physical activity (“None”) excluded from Ptrend calculations.
↵gWomen who engage in recreational activities other than walking.