Table 2. —
Multivariate Survival Analysis Using a Cox Proportional Hazard Model
| Variable | Coefficient | HR | SE (Coefficient) | Lower 95% | Upper 95% | Z score | P value |
|---|---|---|---|---|---|---|---|
| IR | 2.4029 | 11.0550 | 0.4299 | 4.7604 | 25.673 | 5.590 | 2.27 E-08 |
| Stage IV | 0.3268 | 1.3865 | 0.3092 | 0.7563 | 2.542 | 1.057 | .2906 |
| ERBB4 | |||||||
| 101–200 | 0.8516 | 2.3434 | 0.4127 | 1.0436 | 5.262 | 2.063 | .0390 |
| 201–300 | 1.0985 | 2.9995 | 0.4230 | 1.3091 | 6.873 | 2.597 | .0094 |
When treating ERBB4 as a categorical variable (0–100, 101–200, or 201–300), its presence significantly affected OS.
ERBB4 = erb-b2 receptor tyrosine kinase 4, HR = hazard ratio, IR = incomplete response, OS = overall survival, SE = standard error.