Table S4.
Multivariate regression analysis of characteristics for cancer-specific survival in patients with age ≥75 years+ poorly differentiated or undifferentiated
| Variables | Multivariate analysis for CSS | p | |
|---|---|---|---|
| HR | 95% CI | ||
| Gender | |||
| Male | 1 (Referent) | ||
| Female | 0.640 | 0.141–2.898 | 0.563 |
| Race | |||
| White | 1 (Referent) | ||
| Black | |||
| Other | 8.373 | 1.036–67.700 | 0.046 |
| Marital status | |||
| Married | 1 (Referent) | ||
| Unmarried | 1.562 | 0.316–7.708 | 0.584 |
| Year of diagnosis | |||
| 1973–2009 | 1 (Referent) | ||
| 2010–2015 | 0.380 | 0.064–2.266 | 0.288 |
| Tumor site | |||
| Head | 1 (Referent) | ||
| Body/tail | 2.483 | 0.447–13.785 | 0.307 |
| Overlap | |||
| Other | 17.690 | 0.918–340.8 | 0.057 |
| Tumor size | |||
| ≤4 cm | 1 (Referent) | ||
| >4 cm | 0.458 | 0.119–1.766 | 0.257 |
| Unknown | 5.879 | 0.296–116.8 | 0.245 |
| Primary site surgery | |||
| No | 1 (Referent) | ||
| Yes | 0.469 | 0.091–2.407 | 0.364 |