ÁrvoRe - Cost-Effectiveness to R

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The ArvoRe package is a Cost-effectiveness Analysis (CEA) implementation for R oriented to compute problems that involve simple decision tree models and Markov models. It offer a graphic user interface (GUI) developed in Tcl/Tk. This graphical interface simplifies the decision tree creation task and its manipulation, such as, nodes addition, probability values definition, node kind configuration, etc.

Graphics, tables and important summary statistics for the ACE are available trough of windows, the which ones concentrate them in an unique location. All graphics and decision tree can be exported to image files using PNG, JPG and BMP format. Some tables with summary statistics of an CEA problem in this package can be exported for files in the format CSV (comma separated values) or TXT (text plain). Other important ArvoRe implementation is the CEA problems solution that involve Markov chains. These problems are solved by means of first order Monte Carlo simulation. A model created to a Cost-effectiveness problem in the ArvoRe can be saved in a file with extension ARV. The main user preferences settings - as kind of tree to be exhibited, definitions that should be also exhibited are conserved in this extension file ARV.

REQUIRIMENTS

· R 2.6.2 (not compatible with R 2.7.x because it use use Tcl/Tk 8.5)

To run ArvoRe is necessary R version 2.6.2. The posterior versions of R, like 2.7, are not compatible with ArvoRe, because it uses Tcl/Tk version 8.5.

· Packages abind, grid, gplots and tcltk

ArvoRe requires R in version 2.6.2 and some packages: abind, grid, gplots and tcltk. This packages must be installed in your system. These packages can be downloaded from Comprehensive R Archive Network, CRAN http://www.R-project.org .

· Tcl/Tk 8.4 (suggested Activetcl 8.4 to Windows platform)

The ArvoRe package requires installation of a more complete version of the language Tcl/Tk than that that accompanies the R originally. Many Tk's Functionalities used to results tasks and presentation simplification do not accompany the package tcltk used by R. These functionalities, like to BWidget, Img and TkTable, are extensions to Tk. For Windows platform, is recommended use and configuration of Tcl/Tk version 8.4 distributed free of cost by ActiveState (in http://www.activestate.com), called ActiveTcl 8.4.

DEVELOPMENT

ArvoRe package is developed through a SVN's System in R-Forge. Anybody can contribute with improvement and/or development of code. Visit ArvoRe project page.

A more recent copy of this package can be directly installed in the R using the command

install.packages("arvore",repos="http://R-Forge.R-project.org")

Development versions, the "latest snapshot", can be acquired below.

scm-latest.tar.gz

REFERENCE / HELP

You can read the paper "Implementação de uma interface gráfica para Análise de Custo Efetividade no R" to solve instalation problems and know more about Cost-Effectiveness Analysis.

DOWNLOAD

Binary (Windows)