Table IV. Multivariate analysis of the clinical factors that affected pulmonary disease-free interval after surgical treatment for colorectal liver metastases (n=298).
| Variables | b | SE | Sig | Exp(B) |
|---|---|---|---|---|
| Operation type | – | – | – | – |
| Resection vs cryotherapy±resection | −0.378 | 0.180 | 0.036 | 0.685 |
| Preoperative CEA level (ng/ml) | – | – | 0.005 | – |
| > 100.0 vs unknown | 0.308 | 0.188 | 0.101 | 1.360 |
| > 100.0 vs <5.0 | −0.628 | 0.177 | 0.000 | 0.534 |
| > 100.0 vs 5.01–100.0 | 0.035 | 0.134 | 0.795 | 1.036 |
b, regression coefficient; SE, standard error; Sig, significance; Exp(B), −eB; CEA, carcinoembryonic antigen.