Table 2.

RR (95% CI) of breast cancer according to high school intake of red meat

VariableRed meat intake during high school
Ptrend
Q1 (68 g)Q2 (112 g)Q3 (145 g)Q4 (1.83 g)Q5 (2.62 g)
No. cases88859210090
Median servings per day0.711.131.421.852.49
Age and calorie adjusted RR1.001.02 (0.75-1.38)1.09 (0.80-1.47)1.22 (0.89-1.78)1.26 (0.89-1.77)0.11
Multivariate* RR1.001.03 (0.76-1.40)1.13 (0.83-1.53)1.27 (0.93-1.74)1.34 (0.94-1.89)0.045
Multivariate* RR also adjusted for adult meat1.001.09 (0.80-1.48)1.16 (0.85-1.58)1.33 (0.96-1.83)1.40 (0.98-2.00)0.033
Multivariate* RR also adjusted for heme iron1.001.03 (0.76-1.41)1.13 (0.82-1.57)1.28 (0.91-1.81)1.35 (0.89-2.04)0.089
Multivariate* RR also adjusted for animal fat1.001.05 (0.76-1.43)1.15 (0.83-1.59)1.31 (0.93-1.84)1.39 (0.93-2.08)0.059
  • * Multivariate models were adjusted for age, total energy intake, family history of breast cancer, history of benign breast disease, menopausal status, age at menarche, parity, age at first birth, weight gain since age 18 y, BMI at age 18 y, current oral contraceptive, and adult alcohol use.

  • Twelve cases were excluded from this analysis because of missing data on adult diet. Adult red meat consumption was nonsignificantly inversely associated with breast cancer in this analysis.