Fig 1.
Receiver operating characteristic (ROC) curves for the RF and LASSO models, and the UPC index.
Curves are shown for both the full cohort and the regular users.
Fig 2.
Variable importance scores for LASSO and Random Forest models.
For each model, the VIMPs are divided by the maximum VIMP value to scale them so that the most important variable is equal to 1. FP_UPC: Usual provider continuity limited to family physician visits. KPC_MP: Known Provider Continuity-Multiple Providers. MCI: Modified Continuity Index. MMCI: Modified, Modified Continuity Index. Provider UPC: Usual provider continuity based on all provider visits. EK: Ejlertsson’s Index K. Known FP: Known Provider Continuity -Personal Provider. PPC: Personal Provider Continuity.
Table 1.
AUC estimates for selected models with a limited set of predictive variables relative to full RF and LASSO models.