Table 2 Result of the test of proportionality assumptions for each covariate in the final model

1.193867

0.1157498

1.83

0.068

0.9872541

1.443721

0.9935444

0.0323247

− 0.20

0.842

0.9321668

1.058963

1.468227

0.175882

3.21

0.001

1.160984

1.85678

0.9090509

0.0553318

− 1.57

0.117

0.8068216

1.024233

1.038888

0.02757

1.44

0.151

0.9862326

1.094354

1.009224

0.2262703

0.04

0.967

0.6503487

1.566134

1.363629

0.1638869

2.58

0.010

1.077445

1.725828