Table 3.
Multivariate Cox proportional hazards model for disease-free survival in invasive lobular carcinoma (ILC)
| Hazard ratio | 95% CI | P | |
|---|---|---|---|
| ER high (ref) | |||
| ER low | 1.01 | 0.50–2.02 | 0.98 |
| ER medium | 0.57 | 0.25–1.29 | 0.18 |
| PR high (ref) | |||
| PR low | 2.22 | 1.31–3.75) | 0.003 |
| Age at diagnosis (per 1 year increase) | 1.01 | 0.9901.04 | 0.25 |
| Stage 1 (ref) | |||
| Stage 2 | 0.82 | 0.41–1.64 | 0.58 |
| Stage 3 | 2.43 | 1.24–4.74 | 0.009 |
| Grade 1 (ref) | |||
| Grade 2 | 0.84 | 0.49 | 0.53 |
| Grade 3 | 2.55 | 0.91–7.19 | 0.076 |
| Receipt of chemotherapy | 0.96 | 0.52–1.75 | 0.89 |
| Adjuvant endocrine therapy | 0.53 | 0.52–1.75 | 0.02 |
| HER2 Positive | 1.41 | 0.50–3.97 | 0.51 |
Total n = 621. ER estrogen receptor; PR progesterone receptor; CIconfidence interval