Is it reasonable to add covarite to PD parameters kin or kout?
Dear NMusers,
Right now I am doing covarite analysis for an indirect response model.
I tested a few potential covarites and found it's STATISTICALLY significant if
I add observed baseline value to kin.
But I am not sure if it makes sense to add the baseline value as a covarite to
kin.
Could you please help me if you have had similar experiences before?
Thank you very much!