| abso_diff_est | Estimate the Gini's mean difference/mean absolute difference(MAD) for a Given Treatment Regime | 
| augX | Generate Pseudo-Responses Based on Conditional Quantile Regression Models | 
| DR_Qopt | The Doubly Robust Estimator of the Quantile-Optimal Treatment Regime | 
| dr_quant_est | The Doubly Robust Quantile Estimator for a Given Treatment Regime | 
| get_os | Get the OS from R | 
| IPWE_MADopt | Estimation of the Optimal Treatment Regime defined as Minimizing Gini's Mean Differences | 
| IPWE_Mopt | Estimate the Mean-optimal Treatment Regime | 
| IPWE_Qopt | Estimate the Quantile-optimal Treatment Regime | 
| mean_est | The Inverse Probability Weighted Estimator of the Marginal Mean Given a Specific Treatment Regime | 
| mestimate | The Mean-Optimal Treatment Regime Wrapper Function | 
| qestimate | The Quantile-Optimal Treatment Regime Wrapper Function | 
| quant_est | Estimate the Marginal Quantile Given a Specific Treatment Regime | 
| TwoStg_Mopt | Estimate the Two-stage Mean-Optimal Treatment Regime | 
| TwoStg_Qopt | Estimate the Two-stage Quantile-optimal Treatment Regime |