From: How do multi-stage, multi-arm trials compare to the traditional two-arm parallel group design – a reanalysis of 4 trials
Comparison
Hazard ratio
Confidence interval
regimen A vs B
0.905
0.788 – 1.039
regimen A vs C
0.837
0.728 – 0.962
regimen A vs D
0.969
0.846 – 1.110
regimen A vs E
0.925
0.807 – 1.061