Breast cancer incidence age-specific rate ratios for linear calendar trends during 1970–1979 and for 2005–2009 v. 1970–1979
| Age, yr | Linear calendar trends 1970–1979 | Population incidence for 2005–2009 v. 1970–1979 (reference) | ||||
|---|---|---|---|---|---|---|
| Invasive breast cancer | Invasive breast cancer | Ductal carcinoma in situ | ||||
| RR per year | 95% CI | RR | 95% CI | RR | 95% CI | |
| 30–39 | 1.02 | 0.99–1.05 | 0.92 | 0.82–1.04 | 2.02 | 1.27–3.23 |
| 40–49 | 0.99 | 0.97–1.00 | 1.01 | 0.95–1.07 | 4.10 | 3.31–5.08 |
| 50–59 | 1.00 | 0.99–1.01 | 0.97 | 0.92–1.02 | 4.64 | 3.80–5.67 |
| 60–69 | 1.01 | 1.00–1.03 | 1.21 | 1.15–1.28 | 7.49 | 5.87–9.57 |
| 70–79 | 1.01 | 0.99–1.03 | 1.25 | 1.18–1.33 | 6.43 | 4.79–8.62 |
| ≥ 80 | 1.00 | 0.98–1.02 | 1.06 | 0.98–1.15 | 1.40 | 0.95–2.05 |
Note: CI = confidence interval, RR = rate ratio