est_S_Plus_Plus_MethodA
                        Estimate the treatment effects for population
                        S_++ using Method A
est_S_Plus_Plus_MethodB
                        Estimate the treatment effects for population
                        S_++ using Method B
est_S_Star_Plus_MethodA
                        Estimate the treatment effects for population
                        S_*+ using Method A
est_S_Star_Plus_MethodB
                        Estimate the treatment effects for population
                        S_*+ using Method B
