tehtuner

Implements methods to fit Virtual Twins models (Foster et al. (2011) doi:10.1002/sim.4322) for identifying subgroups with differential effects in the context of clinical trials while controlling the probability of falsely detecting a differential effect when the conditional average treatment effect is uniform across the study population using parameter selection methods proposed in Wolf et al. (2022) doi:10.1177/17407745221095855.