Public Health Tools

HLM: Hierarchical Linear and Nonlinear Modeling by Scientific Software International, Inc. 

Software for hierarchical linear modeling. Free student version available (with restrictions).

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Interaction by Daniel S. Soperhttp://www.danielsoper.com/interaction/

Free Windows software program to draw and analyze statistical interactions.

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OpenEpi by Dean AG, Sullivan KM, and Soe MM   |   Emory University 

Free, open source software for epidemiologic statistics.

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PASS: Power Analysis and Sample Size by NCSS Statistical Software 

Software to perform power and sample size calculations. License required.

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PS: Power and Sample Size Calculation by Dupont WD, and Plummer WD   |   Vanderbilt University 

Software to perform power and sample size calculations. Free to download.

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WesVar by Westat 

Replication-based variance estimation for analysis of complex survey data. Import/export various file formats. Registration required.

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