Table 2.
Multivariable Logistic Regression Analysis
| Variable | Estimate | OR Estimate | 95% CI for OR Estimate | P |
|---|---|---|---|---|
| Recurrence score | ||||
| No test | — | — | — | |
| Low | −2.178 | 0.232 | 0.170 to 0.317 | |
| Intermediate | 0.443 | 3.190 | 2.588 to 3.932 | |
| High | 2.452 | 23.791 | 14.364 to 39.406 | < .001 |
| Age, years | ||||
| ≤ 45 | — | — | — | |
| 46-55 | 0.869 | 0.586 | 0.457 to 0.751 | |
| 56-65 | 0.319 | 0.338 | 0.263 to 0.435 | |
| 66-75 | −0.359 | 0.172 | 0.129 to 0.229 | |
| ≥ 76 | −2.233 | 0.026 | 0.015 to 0.046 | < .001 |
| ECOG PS | ||||
| 0 | — | — | — | |
| 1 | 0.572 | 1.138 | 0.943 to 1.373 | |
| ≥ 2 | −1.015 | 0.233 | 0.096 to 0.567 | .0017 |
| Tumor size | ||||
| < 2 cm | — | — | — | |
| 2-5 cm | 0.041 | 3.340 | 2.771 to 4.026 | |
| > 5 cm | 1.124 | 9.876 | 6.157 to 15.841 | < .001 |
| Tumor grade | ||||
| 1 | — | — | — | |
| 2 | −0.141 | 1.799 | 1.470 to 2.201 | |
| 3 | 0.869 | 4.936 | 3.862 to 6.308 | < .001 |
NOTE. One thousand eighty-seven patients with missing information (baseline ECOG PS, tumor size, or tumor grade) were excluded from the modeling. Five thousand one hundred forty-two patients were included in the multivariable logistic regression analysis.
Abbreviation: ECOG PS, Eastern Cooperative Oncology Group performance status; OR, odds ratio.