Table 3.
Multivariate analysis of patients with primary spinal chordoma identified in the SEER Program database from 1973 to 2014
| Variable | HR (95%CI) | P value |
|---|---|---|
| Age in years | < 0.001 | |
| 0–20 | Ref | |
| 21–59 | 1.04 (0.65–1.10) | |
| > 60 | 2.72 (1.71–2.89) | |
| Gender | 0.11 | |
| Female | Ref | |
| Male | 1.18 (0.96–1.44) | |
| Race | 0.52 | |
| White | Ref | |
| Black | 0.48 (0.23–1.03) | |
| Other | 0.89 (0.61–1.30) | |
| Primary site | 0.16 | |
| Vertebrae | Ref | |
| Sacrum/pelvis | 0.87 (0.71–1.06) | |
| Disease stage | < 0.001 | |
| Localized/regional | Ref | |
| Distant | 2.16 (1.54–3.02) | |
| Unstaged | 1.01(0.75–1.34) | |
| Rural or urban | 0.72 | |
| Urban | Ref | |
| Rural | 0.96 (0.77–1.21) | |
| Therapy performed | < 0.001 | |
| Surgical | Ref | |
| Non-surgical | 2.14 (1.72–2.69) | |
| Marital status | 0.94 | |
| Unmarried | Ref | |
| Married | 0.99 (0.76–1.29) |
Calculated using Cox proportional hazards model and the values are given as the odds ratio, with the 95% confidence interval in parentheses
HR indicates hazard ratio, CI indicates confidence interval, Ref indicates reference