From: Risk of breast cancer among daughters of mothers with diabetes: a population-based cohort study
Number of breast cancer cases | ||||
---|---|---|---|---|
Age of mother at diagnosis of diabetes (years) | Observed | Expected | SIR | 95% CI |
Up to 49 | 911 | 1072 | 0.85 | (0.80 to 0.91) |
50 to 59 | 353 | 463 | 0.76 | (0.69 to 0.85) |
60 to 69 | 1,458 | 1,685 | 0.87 | (0.82 to 0.91) |
70 to 79 | 2,868 | 3,358 | 0.85 | (0.82 to 0.89) |
80 to 89 | 2,366 | 2,626 | 0.90 | (0.86 to 0.94) |
Total | 7,956 | 9,204 | 0.86 | (0.85 to 0.88) |