Characteristic | Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|
HR (95% CI) | p | HR (95% CI) | p | |
Sex | ||||
Male | 1 | — | ||
Female | 1.257 (0.890–1.776) | 0.195 | — | — |
Age | 1.013 (1.003–1.024) | 0.012 | 1.013 (1.000–1.025) | 0.045 |
Race | ||||
White | 1 | — | ||
Black | 1.463 (0.804–2.665) | 0.213 | — | — |
Other and unknown | 1.037 (0.649–1.659) | 0.879 | — | — |
Tumor grade | ||||
G1–2 | 1 | — | ||
G3–4 | 0.616 (0.332–1.143) | 0.125 | — | — |
Tumor size (mm) | 1.017 (1.010–1.025) | <0.001 | 1.019 (1.012–1.027) | <0.001 |
Number of RLNs | 0.996 (0.983–1.010) | 0.608 | — | — |
Number of PLNs | 1.041 (1.018–1.064) | 0.001 | 1.016 (0.990–1.043) | 0.222 |
Treatment | ||||
Surgery alone | 1 | 1 | ||
Preoperative RT | 0.418 (0.262–0.667) | <0.001 | 0.467 (0.274–0.794) | 0.005 |
Postoperative RT | 0.565 (0.358–0.892) | 0.014 | 0.615 (0.374–1.011) | 0.055 |