Table 3.
Multivariable Analysisa of Patient, Tumor, and Treatment Variables and Their Association With Ultimate Locoregional Control
| Covariate | Odds Ratio (95% CI) | P Value |
|---|---|---|
| Lymphovascular space invasion | ||
| Positive | 0.22 (0.08–0.59) | <.01 |
| Negative | 1 [Reference] | |
| Margins | ||
| Positive | 0.69 (0.06–7.72) | .76 |
| Close, <5 mm | 0.24 (0.09–0.62) | <.01 |
| Negative | 1 [Reference] | |
| Use of elective neck dissection | ||
| Yes | 1 [Reference] | |
| No | 2.25 (0.89–5.68) | .09 |
a
Backward selection with an α level of removal of .20 was used. The following variables were removed from the model: age, histological grade, depth of invasion, perineural invasion, race, sex, adjuvant therapy, and T-stage. Having ultimate locoregional control was the reference group.