| Characteristic | Univariate analysis | Multivariate analysis |
|---|
| OR (95% CI) | P | OR (95% CI) | P |
|---|
| Age |
| < 30 | Reference | | NI | |
| > 30 | 0.821 (0.608–1.108) | 0.197 | | |
| Race |
| White | Reference | | NI | |
| Black | 1.142 (0.779–1.673) | 0.497 | | |
| Other1 | 1.043 (0.636–1.711) | 0.867 | | |
| Unknown | 1.083 (0.126–9.328) | 0.942 | | |
| Gender |
| Male | Reference | | Reference | |
| Female | 1.410 (1.057–1.881) | 0.019 | 1.267 (0.945–1.698) | 0.114 |
| Primary site |
| Extremity | Reference | | | |
| Axial | 0.862 (0.623–1.192) | 0.368 | NI | |
| Grade |
| Low grade | Reference | | Reference | |
| High grade | 5.769 (2.328–14.296) | 0.000 | 4.861 (1.948–12.131) | 0.001 |
| Unknown | 5.381 (2.106–13.751) | 0.000 | 4.326 (1.681–11.136) | 0.002 |
| Tumor size |
| < 5 | Reference | | Reference | |
| > 5 | 4.107 (2.064–8.171) | 0.000 | 3.432 (1.715–6.867) | < 0.001 |
| Unknown | 6.281 (2.969–13.288) | 0.000 | 5.470 (2.568–11.654) | < 0.001 |
- OR odds ratio, CI confidence interval, NI not included. n = 1457
- 1Including American Indian/Alaska Native, Asian/Pacific Islander
