Table 2. Univariate Cox regression analysis of characteristics associated with DSS and OS status.
| Parameters | DSS | OS | |||
|---|---|---|---|---|---|
| HR (95% CI) | P-value | HR (95% CI) | P-value | ||
| Gender | Female | 1.00 Reference | 0.786 | 1.00 Reference | 0.834 |
| Male | 1.034 (0.813-1.315) | 0.980 (0.809-1.186) | |||
| Age | ≤ 51 years | 1.00 Reference | 0.000 | 1.00 Reference | 0.000 |
| > 51 years | 2.341 (1.829-2.996) | 2.253 (1.850-2.742) | |||
| Race | White | 1.00 Reference | 1.00 Reference | ||
| Black | 1.353 (0.888-2.061) | 0.159 | 1.430 (0.985-2.075) | 0.060 | |
| Others | 1.317 (0.721-2.406) | 0.370 | 1.662 (1.026-2.691) | 0.039 | |
| Marital status | Married | 1.00 Reference | 1.00 Reference | ||
| Other status | 1.006 (0.970-1.280) | 0.964 | 1.049 (0.867-1.269) | 0.626 | |
| CHSDA Region | East | 1.00 Reference | 1.00 Reference | ||
| Northern plain | 0.411 (0.258-0.654) | 0.000 | 0.628 (0.431-0.914) | 0.015 | |
| Pacific coast | 0.925 (0.589-1.453) | 0.736 | 0.996 (0.687-1.445) | 0.985 | |
| Southwest | 0.570 (0.376-0.864) | 0.008 | 0.761 (0.540-1.073) | 0.119 | |
| Locations | Central nerve system | 1.00 Reference | 1.00 Reference | ||
| Head and neck | 0.537 (0.288-1.001) | 0.050 | 0.579 (0.353-0.950) | 0.031 | |
| TAPC | 0.412 (0.213-0.798) | 0.009 | 0.493 (0.296-0.822) | 0.007 | |
| Extremity | 0.789 (0.434-1.435) | 0.438 | 0.755 (0.470-1.215) | 0.248 | |
| Other location | 0.800 (0.429-1.493) | 0.484 | 0.696 (0.420-1.154) | 0.160 | |
| AJCC Stage | Stage I + II | 1.00 Reference | 0.271 | 1.00 Reference | 0.182 0.160 |
| Stage III + IV | 11.035 (0.024-549.7) | 0.010 (0.000-8.658) | |||
| SEER stage | Localized + regional | 1.00 Reference | 0.012 | 1.00 Reference | 0.028 |
| Distant metastasized | 1.532 (1.100-2.134) | 1.343 (1.032-1.749) | |||
| Treatment | Radiotherapy + surgery | 1.00 Reference | 1.00 Reference | ||
| Surgery + radiotherapy | 0.489 (0.242-0.992) | 0.047 | 0.450 (0.252-0.803) | 0.007 | |
| Surgery alone | 0.353 (0.237-0.526) | 0.000 | 0.365 (0.261-0.508) | 0.000 | |
| Radiotherapy alone | 0.294 (0.200-0.431) | 0.000 | 0.333 (0.244-0.454) | 0.000 | |
| OCM | 0.742 (0.398-1.384) | 0.348 | 0.751 (0.454-1.242) | 0.264 | |
| Unknown | 0.436 (0.134-1.422) | 0.169 | 0.361 (0.130-1.000) | 0.050 | |
| Treatment | Surgery with radiotherapy | 1.00 Reference | 0.021 | 1.00 Reference | 0.053 |
| Surgery alone | 0.738(0.570-0.955) | 1.226 (0.997-1.506) | |||
| Pathologic grade | Grade I + II | 1.00 Reference | 0.002 | 1.00 Reference | 0.005 |
| Grade III + IV | 2.210 (1.338-3.649) | 1.694 (1.169-2.455) | |||
Abbreviations: SEER, surveillance, epidemiology, and end results; SFT, solitary fibrous tumor; DSS, disease specific survival; OS, overall survival; HR, hazard ratio; CI, confidence interval; CHSDA, contract health service delivery areas; TAPC, thoracic, abdominal and pelvic cavity; OCM, Others combined modalities; AJCC, American joint committee on cancer.