# Contents

This website lists repositories of statistical software packages developed by the team of the

Institute of Clinical Biometrics,

Center for Medical Data Science,

Medical University of Vienna,

to accompany their research projects.

Please note that the programs are prototypes:

**The programs have been designed for our programming environment.****We cannot guarantee their functioning in other hard- and software environments.****You may have to do some adaptions yourself.**

We have extensively tested the programs, yet we deny liability for results from these programs.

This website is under development, more repositories will be added soon.

# Statistical modeling

*flicflac* - SAS (c) macros for Firth’s correction in logistic, Cox and Poisson regression

*logistf* - R package for Firth’s correction in logistic regression (including FLIC and FLAC methods)

*coxphf* - R package for Firth’s correction in Cox regression

*abe* - SAS (c) macros for Augmented Backward Elimination (variable selection)

*shrink* - R package for Global, Parameterwise and Joint Shrinkage Factor Estimation

*concreg* - R package for semiparametric concordance regression

# Survival analysis

*pshreg* - SAS (c) macro for Proportional Subdistribution Hazards Regression

*coxphw* - R package for weighted Cox regression (average hazard ratio estimation)

*SurvCorr* - R package for estimation of correlation coefficients with associated confidence limits for bivariate, partially censored survival times.

# Explained variation

*surev* - R and SAS (c) programs for predictive accuracy and explained variation in Cox regression

*PEVfrailty* - R and SAS (c) programs for explained variation in shared frailty Cox models

*NecSuff* - R and SAS (c) programs for degrees of necessity and of sufficiency

*relimp* - SAS (c) macro to compare the importance of prognostic factors; for logistic and Cox regression

# Simulation studies

*simdata* - An R package to generate simulated data sets

*looplot* - An R package for creating nested loop plots

# Statistical tests for -omics

*lim.lrt* - R code for Left-Inflated Mixture model Likelihood Ratio Test

*t.opt* - R code for the Adaptive Trimmed (one-sided) t-Test

*Last changes 23 May 2024*