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In this page, several extension packages for the statistical software R and a macro for the statistical package SAS written in the framework of my research are presented.

R is a popular open source software tool for statistical analysis and graphics. More information can be
obtained from its webpage. Many extension packages
are available from the *Comprehensive R Archive Network (CRAN)* accessible from
the R webpage.

I am author of several R extension packages. All of them are available under the GNU license.
Package **mixAK** contains several methods to analyze normal mixtures and perform
a model based clustering.
Packages **smoothSurv**
and **bayesSurv**
implement mainly methods for the regression analysis with time-to-event type of data (survival analysis).
Package **glmmAK** is devoted to generalized linear mixed models.

The package is described in

The methodology is described and the package used in

This package is available from *CRAN.*

The methodology is described and the package used in

- Komárek, Lesaffre, and Hilton (2005);
- Lesaffre, Komárek, and Declerck (2005);
- Komárek (2006, Chapter 7).

This package is available from *CRAN.*

The methodology is described and the package used in

- Komárek and Lesaffre (2006);
- Komárek and Lesaffre (2007a);
- Komárek and Lesaffre (2007b);
- Komárek, Lesaffre, and Legrand (2007);
- Komárek (2006, Chapters 8-10).

This package is available from *CRAN.*

The methodology is described and the package used in

This package is no more available from *CRAN.*

SAS is a commercial statistical software. Its webpage tells you more.
In 2001, I wrote a SAS macro called **hetmixed**.

- Verbeke, G. and Lesaffre, E. (1997).
A linear mixed-effects model with heterogeneity in the random-effects population.
*Journal of the American Statistical Association,***91,**217-221.

- Verbeke, G. and Molenberghs, G. (2000).
*Linear Mixed Models for Longitudinal Data.*New York: Springer-Verlag, pp. 169-188.

The macro itself is documented in my MSc. thesis (Komárek, 2001) from which a manual has been derived.

The macro is freely available to everyone and I guess it still works. You can use it but, please, do not ask any help from me anymore. The macro was written more than 10 years ago and that is also the time I used it actively for the last time.

Source code Manual Example codeView My Stats