approached significancep = 0.052
For PFS, the score test approached significance (χ 2 = 9.409, p = 0.052) and the change-from-block test was significant (χ 2 = 11.078, p = 0.026); lung metastasis was the only significant covariate (HR = 6.037, 95% CI: 1.390–26.230; p = 0.016), while other sites were non-significant ( Table 2 ).