ESS                     Compute effective sample size of weighted
                        sample
as.weightit             Create a 'weightit' object manually
get_w_from_ps           Get weights from propensity scores
                        corresponding to different estimands
make_full_rank          Make a matrix full rank
method_cbps             Covariate Balancing Propensity Score Weighting
method_ebal             Entropy Balancing
method_ebcw             Empirical Balancing Calibration Weighting
method_gbm              Propensity Score Weighting Using Generalized
                        Boosted Models
method_npcbps           Nonparametric Covariate Balancing Propensity
                        Score Weighting
method_optweight        Optimization-Based Weighting
method_ps               Propensity Score Weighting Using Generalized
                        Linear Models
method_super            Propensity Score Weighting Using SuperLearner
method_twang            Propensity Score Weighting Using Generalized
                        Boosted Models with TWANG
method_user             User-Defined Functions for Estimating Weights
ps.cont                 Generalized Propensity Score Estimation using
                        GBM
sbps                    Subgroup Balancing Propensity Score
summary.weightit        Print and Summarize Output
trim                    Trim Large Weights
weightit                Generate Balancing Weights
weightitMSM             Generate Balancing Weights
