Breast cancer risk ratio of relatives of breast cancer probands according to age of proband and degree of relationship
| Age of proband | 1st degree | 2nd degree | 3rd degree | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No of cases | Risk ratio (95% CI) | No of cases | Risk ratio (95% CI) | No of cases | Risk ratio (95% CI) | ||||||
| 20–29 | 21 | 2.79 (1.73–4.27) | 35 | 1.65 (1.15–2.29) | 15 | 2.96 (1.66–4.88) | |||||
| 30–39 | 67 | 2.68 (2.04–3.51) | 98 | 1.98 (1.65–2.93) | 51 | 2.22 (1.65–2.93) | |||||
| 40–49 | 96 | 2.32 (1.89–2.86) | 103 | 1.45 (1.19–1.77) | 55 | 1.30 (0.99–1.71) | |||||
| 50–59 | 54 | 2.08 (1.57–2.72) | 61 | 1.29 (1.00–1.64) | 78 | 1.32 (1.05–1.65) | |||||
| 60–69 | 16 | 1.60 (0.92–2.72) | 31 | 1.38 (0.94–1.97) | 59 | 1.42 (1.09–1.85) | |||||
| 70–79 | 0 | 12 | 1.19 (0.62–2.08) | 32 | 1.90 (1.30–2.68) | ||||||
| 80– | 1 | 0.70 (0.02–3.89) | 4 | 0.89 (0.24–2.27) | 19 | 1.92 (1.16–3.00) | |||||