twoStageDesignTMLE - Targeted Maximum Likelihood Estimation for Two-Stage Study
Design
An inverse probability of censoring weighted (IPCW)
targeted maximum likelihood estimator (TMLE) for evaluating a
marginal point treatment effect from data where some variables
were collected on only a subset of participants using a
two-stage design (or marginal mean outcome for a single arm
study). A TMLE for conditional parameters defined by a marginal
structural model (MSM) is also available.