Multivariate Analyses for Patient Survival (n = 225, Events = 102)
| Variable | Coefficient | Hazard ratio (confidence interval) | P |
|---|---|---|---|
| Age | 0.004 | 1.07 | 0.61 |
| Sex | −0.24 | 0.86 (0.68, 1.08) | 0.28 |
| Grade | |||
| High vs. low | 1.60 | 4.93 (1.66, 14.64) | 0.004 |
| Intermediate vs. low | 1.03 | 2.8 (0.93, 8.40) | 0.07 |
| Subtype | |||
| Cartilage vs. bone | 0.06 | 1.06 (0.33, 3.46) | 0.92 |
| Soft tissue vs. bone | 0.25 | 1.28 (0.44, 3.76) | 0.65 |
| Size (sqrt) | −0.005 | 0.84 (0.66, 1.09) | 0.40 |
| SUVmax (sqrt) | 0.10 | 1.10 (0.88, 1.37) | 0.40 |
| Heterogeneity (sqrt) | 0.49 | 1.72 (1.30, 2.28) | <0.001 |
Continuous variable, hazard ratio, and confidence intervals are interpreted as increase in survival risk associated with increase of 1 SD of covariate. Significant variables are in bold type. sqrt = square root.