Table 1:
Clinical, pathological, and biological characteristics in patients with breast cancer
| Variable | n (%) | Death (%) | Estimated Survival time (Years) | 95% Confidence Interval | |||
|---|---|---|---|---|---|---|---|
| Mean | Std. Error | ||||||
| Age at diagnosis | Under 40 yrs. | 670(21.0) | 116(17.3) | 16.0 | 0.76 | 14.5 | 17.5 |
| 40 to 60 yrs | 1926(60.5) | 319(16.6) | 14.6 | 0.49 | 13.7 | 15.6 | |
| Over 60 yrs | 588(18.5) | 101(17.2) | 13.0 | 0.92 | 11.2 | 14.8 | |
| Histologic grade | Well | 391(12.3) | 19(4.9) | 21.4 | 0.86 | 19.8 | 23.1 |
| Moderately | 1680(52.8) | 272(16.2) | 15.2 | 0.51 | 14.2 | 16.2 | |
| Poorly | 1113(35.0) | 245(22.0) | 11.4 | 0.63 | 10.2 | 12.7 | |
| Stage | I | 663(20.8) | 24(3.6) | 21.3 | 0.81 | 19.7 | 22.9 |
| II | 1467(46.1) | 210(14.3) | 16.2 | 0.58 | 15.0 | 17.3 | |
| III+ (III & IV) | 1054(33.1) | 302(28.7) | 10.0 | 0.54 | 8.9 | 11.0 | |
| Lymph node status | N0 | 1479(46.5) | 96(6.5) | 19.7 | 0.56 | 18.6 | 20.8 |
| N1 | 1389(43.6) | 337(24.3) | 11.9 | 0.57 | 10.8 | 13.0 | |
| N2+(N2 & N3) | 316(9.9) | 103(32.6) | 7.5 | 0.66 | 6.2 | 8.8 | |
| Tumor size | T1 | 1009(31.7) | 66(6.5) | 19.0 | 0.75 | 17.6 | 20.5 |
| T2 | 1707(53.6) | 308(18) | 14.5 | 0.54 | 13.5 | 15.6 | |
| T3+(T3 & T4) | 468(14.7) | 162(34.6) | 9.5 | 0.75 | 11.0 | 5.3 | |
| Estrogen receptor | Negative (−) | 2278(71.5) | 428(18.8) | 14.5 | 0.45 | 13.6 | 15.3 |
| Positive (+) | 906(28.5) | 108(11.9) | 16.3 | 0.82 | 14.7 | 17.9 | |
| Progesterone receptor | Negative(−) | 2126(66.8) | 409(19.2) | 14.5 | 0.46 | 13.6 | 15.4 |
| Positive (+) | 1058(33.2) | 127(12.0) | 15.5 | 0.72 | 14.0 | 16.9 | |
| Lymphovascular invasion | Negative(−) | 1817(57.1) | 159(8.8) | 18.7 | 0.48 | 17.8 | 19.7 |
| Positive (+) | 1367(42.9) | 377(27.6) | 7.7 | 0.33 | 7.1 | 8.3 | |
| Type of surgery | BCS | 1997(62.7) | 250(12.5) | 16.2 | 0.67 | 14.9 | 17.5 |
| MRM | 1187(37.3) | 286(24.1) | 14.2 | 0.50 | 13.3 | 15.2 | |