Table 4 Summary of the main scenarios
Scenario | Treatment effect | Interaction | |
|---|---|---|---|
on the log HR scale | |||
Subset 2 | Subset 1 | treatment-by-subset | |
\(\alpha _{S=2}\) | \(\alpha _{S=1}\) | ||
Sc1 | 0 | -0.7 | yes |
Sc2 | 0 | \(\varepsilon\) | depending on \(\varepsilon\) |
Sc3 | \(\varepsilon\) | \(\varepsilon\) | no |
Sc4 | 0 | 0 | no |