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Table 3 Observed and expected breast cancers among daughters of mothers with diabetes by family history

From: Risk of breast cancer among daughters of mothers with diabetes: a population-based cohort study

  Number of breast cancer cases   
Family history of breast cancer Observed Expected SIR 95% CI
Yes 696 488 1.43 (1.32 to 1.54)
No 7,260 8,716 0.83 (0.81 to 0.85)
  1. CI, confidence interval; SIR, standardized incidence ratio.