bw_single               Predictor selection function for backward
                        selection of Logistic regression models.
ipdna_md                Example dataset for the psfmi_mm function
lbp_orig                Example dataset for psfmi_perform function,
                        method boot_MI
lbpmi_extval            Example dataset of Low Back Pain Patients for
                        external validation
lbpmicox                Example dataset for psfmi_coxr function
lbpmilr                 Example dataset for psfmi_lr function
lbpmilr_dev             Example dataset for mivalext_lr function
mivalext_lr             External Validation of logistic prediction
                        models in multiply imputed datasets
pool_auc                Calculates the pooled Area Under the Curve in
                        Multiply Imputed datasets
pool_intadj             Provides pooled adjusted intercept after
                        shrinkage of pooled coefficients in multiply
                        imputed datasets
pool_performance        Pooling performance measures over multiply
                        imputed datasets
psfmi_coxr              Pooling and Predictor selection function for
                        backward or forward selection of Cox regression
                        models in multiply imputed data.
psfmi_lr                Pooling and Predictor selection function for
                        backward or forward selection of Logistic
                        regression models in multiply imputed data.
psfmi_mm                Pooling and Predictor selection function for
                        multilevel models in multiply imputed datasets
psfmi_mm_multiparm      Multiparameter pooling methods called by
                        psfmi_mm
psfmi_perform           Evaluate model performance of logistic
                        prediction models in Multiply Imputed datasets
psfmi_stab              Function to evaluate bootstrap predictor and
                        model stability in multiply imputed datasets.
rsq_nagel               Nagelkerke's R-square calculation for logistic
                        regression / glm models
scaled_brier            Calculated the scaled Brier score
