complex.heterogeneity   Estimates the proportion of treatment effect
                        explained by the surrogate marker as a function
                        of multiple baseline covariates in a randomized
                        treatment setting.
exampledata             Example data
obs.het.surr            Estimate the proportion of the treatment effect
                        explained by the surrogate marker as a function
                        of multiple baseline covariates in an
                        observational setting.
obs_exampledata_test    Example testing data for observational setting
obs_exampledata_train   Example training data for observational setting
