Table 3. Multivariable Cox regression for OS for all patients.
| Variables | OR (95% CI) | p-value | |
|---|---|---|---|
| Age | 1.02 (1.01–1.03) | <0.001 | |
| Race | |||
| White | 1 | ||
| Black | 1.03 (0.99–1.06) | 0.071 | |
| Other | 0.76 (0.72–0.80) | <0.001 | |
| Tumor size (cm) | |||
| ≤4 | 1 | ||
| 4.1–8.0 | 1.39 (1.33–1.45) | <0.001 | |
| >8 | 2.01 (1.91–2.13) | <0.001 | |
| Size unknown | 1.48 (1.42–1.53) | <0.001 | |
| Stage | |||
| I | 1 | ||
| II | 1.21 (1.16–1.27) | <0.001 | |
| III | 2.11 (2.02–2.20) | <0.001 | |
| IV | 3.08 (2.92–3.25) | <0.001 | |
| Unknown | 1.31 (1.25–1.36) | <0.001 | |
| Grade | |||
| 1 | 1 | ||
| 2 | 1.30 (1.23–1.39) | <0.001 | |
| 3 | 1.63 (1.53–1.73) | <0.001 | |
| Unknown | 1.28 (1.20–1.36) | <0.001 | |
| Pelvic lymph nodes | |||
| Negative | 1 | ||
| Positive | 1.46 (1.33–1.52) | <0.001 | |
| Not assessed/unknown | 1.30 (1.22–1.39) | <0.001 | |
| Para-aortic lymph nodes | |||
| Negative | 1 | ||
| Positive | 1.42 (1.33–1.52) | <0.001 | |
| Not assessed/unknown | 1.05 (0.99–1.12) | 0.083 | |
| Charlson/Deyo Comorbidity Score | |||
| 0 | 1 | ||
| 1 | 1.29 (1.25–1.34) | <0.001 | |
| 2+ | 1.75 (1.66–1.84) | <0.001 | |
| Insurance | |||
| Not insured | 1 | ||
| Private Insurance | 0.91 (0.87–0.95) | <0.001 | |
| Medicaid | 1.16 (1.11–1.22) | <0.001 | |
| Medicare | 1.16 (1.10–1.22) | <0.001 | |
| Other govt/unknown | 0.86 (0.80–0.92) | <0.001 | |
| Median income quartiles ($) | |||
| <38,000 | 1 | ||
| 38,000–47,999 | 0.98 (0.95–1.01) | 0.194 | |
| 48,000–62,999 | 0.95 (0.92–0.98) | 0.003 | |
| >63,000 | 0.90 (0.87–0.93) | <0.001 | |
| Region | |||
| Northeast | 1 | ||
| Midwest | 1.15 (1.12–1.19) | <0.001 | |
| South | 1.11 (1.08–1.15) | <0.001 | |
| West | 1.07 (1.03–1.12) | <0.001 | |
| Histology | |||
| SCC | 1 | ||
| Adenocarcinoma | 1.16 (1.12–1.20) | <0.001 | |
| Sarcoma | 2.17 (1.99–2.37) | <0.001 | |
CI, confidence interval; OR, odds ratio; OS, overall survival; SCC, squamous cell carcinoma.