Multivariate Cox Regression Analysis* Adjusted for Age and Sex
| Overall survival | Recurrence-free survival | |||||
| Variable (by unit increase) | Hazard ratio | 95% CI | P | Hazard ratio | 95% CI | P |
| TGV | 1.010 | 1.004–1.016 | 0.001 | 1.006 | 1.002–1.010 | 0.002 |
| MTV | 1.035 | 1.013–1.058 | 0.001 | 1.031 | 1.013–1.049 | 0.001 |
| Size of largest metastasis (mm) | 1.054 | 1.020–1.088 | <0.001 | 1.061 | 1.028–1.096 | <0.001 |
| Basingstoke index | 1.614 | 1.232–2.116 | 0.001 | 1.569 | 1.206–2.041 | 0.001 |
| Fong (MSKCC) score | — | — | — | 1.830 | 1.045–3.205 | 0.034 |
↵* Forward-stepwise method.
CI = confidence interval, MSKCC = Memorial Sloan-Kettering Cancer Center.