WINPEPI (PEPI-for-Windows)

Joe Abramson has developed an augmented Windows version (WINPEPI) of the PEPI suite of programs for epidemiologists. You can read a description of WINPEPI (published in Epidemiologic Perspectives & Innovations) by clicking here. A list of currently available functions and procedures is available here.

The last update was posted to this site on 6th June, 2008.

Download the latest version of WINPEPI as an executable (.EXE) file (6.80 mb).

The downloaded file will be WinPepiSetup.exe. Alternatively, you can download it in a ZIP archive :

Download the latest version of WINPEPI as a .ZIP archive (6.78 mb)

which you will have to open to access WinPepiSetup.exe.

When you run WinPepiSetup.exe, it will install the latest WINPEPI programs and manuals, and an index to the statistical procedures and programs, in any folder you select. Older versions will be replaced. Follow the instructions, and your desktop will have a portal to the programs and manuals, the index, and relevant Internet sites.

IF YOU USE WINDOWS VISTA:  Three of the programs in the above packages (COMPARE2, PAIRSetc, and WHATIS) will be displayed properly only if you use Vista's "Windows Classic" theme (to do this, right-click on the desktop, click on Personalise and then on Theme, and select Windows Classic).  If you wish to avoid this, you can download one of the following files instead of the above files, and the above three programs will be Vista-compatible.

Either click here to download winpepisetup_vista.exe (6.80 mb)

or click here to download winpepisetup_vista.zip (6.78 mb)

 

RECENT ADDITIONS

ETCETERA can now calculate standardized mean differences and ratios of means and use them in meta-analyses (ver. 2.00), compute tetrachoric correlations between items in scales (ver. 1.96), appraise scales containing up to 60 items (ver. 1.94), and estimate confidence intervals for differences between correlation coefficients (ver. 1.91). Other recent additions are modules that do a sensitivity analysis to appraise the effect of unmeasured confounders, perform simple (ver. 1.99) as well as multiple linear regression, analyse large contingency tables and three-way tables (loglinear analysis), and perform median polish or mean polish of two-way tables.

DESCRIBE can now (ver. 1.84) estimate prevalence from pooled samples (aggregations of material from different individuals), and (from ver. 1.78) provides stratum-specific likelihood ratios for diagnostic and screening tests, and determines optimal cutpoints based on Kraemer's quality index .

COMPARE2 (from ver. 1.71) estimates a confidence interval (in comparisons of ordinal categorical data in two samples) for the probability that a value in one group will fall above a value from the other.

PAIRSetc now applies the methods described by Bland and Altman (Journal of Biopharmaceutical Statistics 2007, 17: 571) for computing 95% limits of agreement between two methods when measurements by both methods are replicated; provides tetrachoric correlation coefficients.

The currently available WINPEPI programs are :

COMPARE2.EXE - For comparisons of two independent groups or samples. The current version number is 1.80.

DESCRIBE.EXE - For use in descriptive epidemiology including the appraisal of separate samples in comparative studies. The current version number is 1.90.

ETCETERA.EXE - Miscellaneous (randomization, random sampling, adjustment of multiple-test p-values, appraisal of synergism, assessment of a scale, correlation-coefficient tools, large contingency tables, three-way tables, median polish and mean polish, appraisal of effect of unmeasured confounders). The current version number is 2.00.

LOGISTIC.EXE - Multiple logistic regression. The current version number is 1.21.

PAIRSetc.EXE - For appraisal of differences and agreement between matched samples or observations. The current version number is 1.69.

POISSON.EXE - Multiple Poisson regression. The current version number is 1.15.

WHATIS.EXE - An expression evaluator (with storage of constants, interim results, and formulae) and calculator for p values (and their inverse), confidence intervals, and time spans. The current version number is 4.30.

Manuals are supplied in PDF format, which can be read with Foxit Reader or the Adobe Acrobat Reader. The Adobe Acrobat reader can be greatly speeded up if a program called Adobe Reader Speed-Up is installed.

WHATIS, COMPARE2 and PAIRSetc are 16-bit Microsoft Windows applications and will run under any version of Microsoft Windows.  But to display them satisfactorily in Windows Vista, Vista’s "Windows Classic" theme should be used, or Vista-compatible editions of these programs should be downloaded (see above).

DESCRIBE, ETCETERA, LOGISTIC and POISSON are 32-bit applications and will run under any version of Microsoft Windows except 3.x.

Please report any problems you experience or any suggestions you may have to improve the package .

E-mail your comments &c.