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Table 7 Odds ratios (ORs) and corresponding 95% confidence intervals (CI) for the associations between body size at age 18 years and tumor size in KARMA

From: Body size in early life and risk of breast cancer

Body size at age 18 T0–T1 (n) T2–T4 (n) Multivariable OR (95% CI)a
Subset of women with percent mammographic density <25%
 Small 81 43 1.00 (Reference)
 Medium 223 61 0.53 (0.33–0.85)
 Large 33 6 0.34 (0.13–0.88)
P trend    0.008
Subset of women with percent mammographic density ≥25%
 Small 87 49 1.00 (Reference)
 Medium 143 68 0.83 (0.51–1.33)
 Large 15 5 0.56 (0.19–1.68)
P trend    0.249
  1. T tumor size
  2. aAdjusted for age, age at menarche, number of children, use of hormone replacement therapy and family history of breast cancer