Multivariate analysis of prognostic factors for local recurrence in 1535 cases of squamous vulvar cancer
| Variable | P value | HR | 95% CI |
| Tumor resection margins | 0.059 | 0.982 | 0.96 to 1.00 |
| Number of positive nodes | 0.83 | 1.009 | 0.93 to 1.10 |
| No radiotherapy | <0.001 | 2.372 | 1.55 to 3.63 |
| No chemotherapy | 0.006 | 2.037 | 1.23 to 3.37 |