Table 2 Relative 5-year survival of breast cancer patients by age group, TNM stage, histology, grade and treatment from univariate analysis, ORCC, 1994–1997
No. (%)a | Relative survival (%) | ||
|---|---|---|---|
Prognostic factor | observations | Rate | 95% CIb |
Age at diagnosis (years) | |||
0–39 | 147 (6.7) | 69.9 | 60.5–77.5 |
40–49 | 448 (20.4) | 84.2 | 79.3–88.1 |
50–69 | 972 (44.3) | 88.4 | 84.9–91.4 |
70+ | 625 (28.5) | 81.3 | 74.9–86.2 |
TNM stage c | |||
Stage I | 812 (37.0) | 96.0 | 92.7–97.8 |
Stage II | 843 (38.5) | 85.6 | 81.7–88.7 |
Stage III | 155 (7.1) | 59.2 | 47.9–68.9 |
Stage IV | 112 (5.1) | 25.5 | 16.1–36.0 |
Histology type | |||
Ductal carcinoma | 1765 (80.5) | 84.32 | 81.6–86.7 |
Lobular carcinoma | 233 (10.6) | 91.02 | 81.0–95.9 |
Others | 194 (8.9) | 76.65 | 67.7–83.4 |
Histologic grade c | |||
G1 (well differentiated) | 346 (15.8) | 97.2 | 90.9–99.1 |
G2 (moderately differentiated) | 674 (30.8) | 87.8 | 83.7–91.0 |
G3 (poorly differentiated) | 474 (21.6) | 73.9 | 68.0–78.9 |
Treatment c | |||
Chemotherapy | 38 (1.7) | 46.2 | 25.2–64.8 |
Radiotherapy | 54 (2.5) | 87.7 | 73.1–94.7 |
Surgery | 188 (8.6) | 89.1 | 77.2–94.9 |
Chemotherapy+radiotherapy | 135 (6.2) | 61.4 | 51.3–70.1 |
Chemotherapy+surgery | 396 (18.1) | 82.1 | 75.8–86.9 |
Radiotherapy+surgery | 389 (17.8) | 96.0 | 89.7–98.6 |
Chemotherapy+radiotherapy+surgery | 972 (44.3) | 77.4 | 73.3–80.9 |
