Hazard ratios for overall survival by testing group and other characteristics, estimated from multivariable cox proportional hazards regression.

1Two-sided 95% CI from the multivariable Cox model.
2One-sided 95% upper confidence bound for post- versus pre-testing group; corresponding p-value <0.001, which rejects the inferiority null hypothesis that OS is worse in the post-testing group than in the pre-testing group.