Table 4.
Breast cancer mortality for patients with ER-positive tumors. Events after 2 versus 5 years of tamoxifen treatment.
| Years after surgery | TAM 2 yrs (n = 1256) |
TAM 5 yrs (n = 1225) |
HR 5 vs 2 yrs |
95% CI | SHR 5 vs 2 yrs |
95% CI |
|---|---|---|---|---|---|---|
| Number of events | ||||||
| ≥2 | 361 | 303 | 0.77 | 0.66–0.90 | 0.79 | 0.68–0.93 |
| 2–5 | 70 | 61 | 0.85 | 0.60–1.20 | 0.85 | 0.60–1.20 |
| 5–15 | 222 | 164 | 0.67 | 0.55–0.83 | 0.68 | 0.56–0.84 |
| 15 – | 69 | 78 | 1.01 | 0.73–1.39 | 0.99 | 0.71–1.37 |
CI = confidence interval; HR = hazard ratio; SHR = subhazard ratio; TAM = tamoxifen.