Table 3.
Cox proportional hazards for cause-specific survival in stage I anal squamous cell carcinoma (2004-2015)
| HR (95%CI) | P value | |
|---|---|---|
| Treatment | ||
| Chemoradiation | REF | |
| Local excision | 0.48 (0.1, 2.3) | 0.36 |
| Age | 1.05 (1.0, 1.1) | 0.05 |
| Sex | ||
| Female | REF | |
| Male | 2.70 (1.0, 7.3) | 0.05 |
| Race* | ||
| White | REF | |
| Black | 8.72 (2.9, 26.7) | 0.0001 |
| Marital Status | ||
| Married | REF | |
| Unmarried/unknown | 0.39 (0.1, 1.1) | 0.08 |
| Tumor Grade** | ||
| Well differentiated | REF | |
| Moderately differentiated | 1.76 (0.4, 8.5) | 0.49 |
| Poorly differentiated | 2.48 (0.5, 13.6) | 0.30 |
| Tumor Size | ||
| ≤ 1 cm | REF | |
| >1 to 2 cm | 1.03 (0.3, 3.1) | 0.96 |
| Insurance | 0.34 | |
| Insured | REF | |
| Medicaid | 2.39 (0.5, 12.4) | 0.30 |
| Uninsured | 13.66 (3.1, 59.4) | 0.0005 |
| Metropolitan residence | ||
| Yes | REF | |
| No | 1.25 (0.3, 6.1) | 0.78 |
Abbreviations: HR=hazard ratio; CI=confidence interval
*
Other race group excluded due to missing values
**
Undifferentiated group excluded due to missing values