Table 2. Demographic and clinical characteristics of the patients enrolled in this study.
| N (%) | No of events* (%) | P value** | HR | CI | ||
|---|---|---|---|---|---|---|
| Stage | IA or IB | 41 (34) | 12 (29) | 0.008 | 1.00 | |
| . | IIA | 29 (24) | 18 (62) | 0.007 | 2.74 | 1.32-5.69 |
| . | IIB | 23 (19) | 11 (48) | 0.056 | 2.23 | 0.98-5.10 |
| . | IIIA | 19 (16) | 12 (63) | 0.002 | 3.55 | 1.57-8.03 |
| . | IIIB | 8 (7) | 6 (75) | 0.0001 | 5.97 | 2.20-16.20 |
| . | DCIS (Tis) | 1 (1) | 1 | 0.399 | 2.41 | 0.31-18.74 |
| Lymph nodes | None | 60 (51) | 24 (40) | 0.013 | 1.00 | |
| . | 1-3 | 43 (36) | 24 (56) | 0.057 | 1.74 | 0.99-3.09 |
| . | 4+ | 15 (13) | 11 (73) | 0.005 | 2.87 | 1.38-5.96 |
| . | Missing | 3 | . | . | . | |
| Grade | I | 8 (7) | 3 (37) | 0.803 | 1.00 | |
| . | II | 59 (53) | 29 (49) | 0.556 | 1.43 | 0.44-4.70 |
| . | III | 45 (40) | 21 (47) | 0.507 | 1.51 | 0.45-5.05 |
| . | Missing | 9 | . | . | . | |
| Estrogen receptors | Negative | 27 (23) | 18 (67) | . | 1.00 | . |
| . | Positive | 91 (77) | 41 (45) | 0.028 | 0.54 | 0.31-0.93 |
| Missing | 3 | |||||
| HER-2 | Negative | 65 (81) | 29 (46) | . | 1.00 | . |
| . | Positive | 15 (19) | 8 (53) | 0.540 | 1.29 | 0.58-2.87 |
| . | Missing | 41 | . | . | . | |
| Progesterone receptor | Negative | 42 (36) | 22 (52) | 0.92 | 0.718 | |
| . | Positive | 75 (64) | 36 (48) | 0.838 | ||
| . | Missing | 4 | . | . |
*Events = relapse or mortality **p value is calculated for each group in relation to the other sub-groups.