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Significant Prognostic Risk Factors for Tumor Recurrence (Tumor-Free Survival) Identified by Multivariate Analysis*
| Risk factor | Coefficient (B) | Relative risk | 95% Confidence interval |
|---|---|---|---|
| Tumor number > 2 | 0.6286 | 1.87 | 1.33–2.64 |
| Tumor size > 8 cm | 0.4724 | 1.60 | 1.06–2.43 |
| Interval ≤ 30 mo | 0.3894 | 1.48 | 1.00–2.18 |
| Bilobar tumors | 0.3308 | 1.39 | 0.98–1.97 |
Excludes the 62 patients with positive surgical margins, lymph node invasion, or distant metastasis.
