Reference

Pooling and Predictor selection functions

psfmi_lm()

Pooling and Predictor selection function for backward or forward selection of Linear regression models across multiply imputed data.

psfmi_lr()

Pooling and Predictor selection function for backward or forward selection of Logistic regression models across multiply imputed data.

psfmi_coxr()

Pooling and Predictor selection function for backward or forward selection of Cox regression models across 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

Functions to evaluate Model performance

psfmi_validate()

Internal validation and performance of logistic prediction models across Multiply Imputed datasets

pool_performance()

Pooling performance measures across multiply imputed datasets

pool_intadj()

Provides pooled adjusted intercept after shrinkage of pooled coefficients in multiply imputed datasets

mivalext_lr()

External Validation of logistic prediction models in multiply imputed datasets

Functions to evaluate Model stability

psfmi_stab()

Function to evaluate bootstrap predictor and model stability in multiply imputed datasets.

stab_single()

Function to evaluate bootstrap predictor and model stability.

Functions to compare prediction models

pool_compare_models()

Compare the fit and performance of prediction models across Multipy Imputed data

pool_reclassification()

Function to pool NRI measures over Multiply Imputed datasets

nri_cox()

Net Reclassification Index for Cox Regression Models

Extra Functions

glm_bw()

Function for backward selection of Linear and Logistic regression models.

glm_fw()

Function for forward selection of Linear and Logistic regression models.

coxph_bw()

Predictor selection function for backward selection of Cox regression models in single complete dataset.

coxph_fw()

Predictor selection function for forward selection of Cox regression models in single complete dataset.

hoslem_test()

Calculates the Hosmer and Lemeshow goodness of fit test.

pool_auc()

Calculates the pooled C-statistic (Area Under the ROC Curve) across Multiply Imputed datasets

scaled_brier()

Calculates the scaled Brier score

rsq_nagel()

Nagelkerke's R-square calculation for logistic regression / glm models

rsq_surv()

R-square calculation for Cox regression models

pool_RR()

Function to combine estimates by using Rubin's Rules

pool_D2()

Combines the Chi Square statistics across Multiply Imputed datasets

pool_D4()

Pools the Likelihood Ratio tests across Multiply Imputed datasets ( method D4)

nri_est()

Calculation of Net Reclassification Index measures

km_estimates()

Kaplan-Meier risk estimates for Net Reclassification Index analysis

km_fit()

Kaplan-Meier (KM) estimate at specific time point

risk_coxph()

Risk calculation at specific time point for Cox model

Datasets used in examples and tutorials

lbp_orig

Example dataset for psfmi_perform function, method boot_MI

anderson

Data from a placebo-controlled RCT with leukemia patients

aortadis

Dataset of patients with a aortadissection

bmd

Data of a non-experimental study in more than 300 elderly women

chlrform

Data about concentration of ß2-microglobuline in urine as indicator for possible damage to the kidney

chol_long

Long dataset of persons from the The Amsterdam Growth and Health Longitudinal Study (AGHLS)

chol_wide

Wide dataset of persons from the The Amsterdam Growth and Health Longitudinal Study (AGHLS)

day2_dataset4_mi

Dataset of low back pain patients with missing values

hipstudy

Dataset of elderly patients with a hip fracture

hipstudy_external

External Dataset of elderly patients with a hip fracture

hoorn_basic

Dataset of the Hoorn Study

infarct

Data of a patient-control study regarding the relationship between MI and smoking

lungvolume

Data of the development of lung and heartvolume of unborn babies

mammaca

Data of a study among women with breast cancer

men

Data of 613 patients with meningitis

sbp_age

Dataset with blood pressure measurements

sbp_qas

Dataset with blood pressure measurements

smoking

Survival data about smoking

weight

Dataset of persons from the The Amsterdam Growth and Health Longitudinal Study (AGHLS)

ipdna_md

Example dataset for the psfmi_mm function

lbpmicox

Example dataset for psfmi_coxr function

lbpmilr

Example dataset for psfmi_lr function

lbpmilr_dev

Example dataset for mivalext_lr function

lbpmi_extval

Example dataset of Low Back Pain Patients for external validation

Deprecated functions

bw_single()

Predictor selection function for backward selection of Linear and Logistic regression models.

psfmi_perform()

Internal validation and performance of logistic prediction models across Multiply Imputed datasets