Table 3 Variable selection results by each of 3 methods, with the best imputation method and threshold value of π for BI-BART and BI-XGB suggested in simulations. BART was used with missForest and π=0.1, XGB with missForest and π=0.3. Definitions of the variable names appear in Web Table 1. RR-BART and BI-BART both selected 17 variables, and BI-XGB selected 16 variables

From: A flexible approach for variable selection in large-scale healthcare database studies with missing covariate and outcome data