| filter_train | filter_train: Identify variables of interest | 
| generate_subgrp_data | Generate Subgroup Data-sets | 
| param_combine | Overall Population Estimate: Aggregating Subgroup-Specific Parameter Estimates | 
| param_est | Parameter Estimation: Across Subgroups | 
| ple_train | Patient-level Estimates: Train Model | 
| plot.PRISM | plot.PRISM | 
| plot_dependence | Partial dependence plots: Single Variable (marginal effect) or heat map (2 to 3 variables). | 
| plot_importance | Importance Plot: Visualize relative importance of variables | 
| plot_ple | Patient-Level Estimate Plot (plot_ple): Visualize distribution of estimates | 
| plot_tree | Tree Plot: Tree Structure, Subgroup-specific treatment estimates | 
| predict.ple_train | Patient-level Estimates Model: Prediction | 
| predict.PRISM | PRISM: Patient Response Identifier for Stratified Medicine (Predictions) | 
| predict.submod_train | Subgroup Identification: Train Model (Predictions) | 
| PRISM | PRISM: Patient Response Identifier for Stratified Medicine | 
| submod_train | Subgroup Identification: Train Model | 
| summary.PRISM | PRISM: Patient Response Identifier for Stratified Medicine (Summary) | 
| summary.submod_train | Subgroup Identification (Summary) |