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OpenEpi logo.gif
Developer(s) OpenEpi Development Team
Initial release January 1, 2004 (2004-01-01)[1]
Stable release

3.03a  (May 4, 2015; 7 years ago (2015-05-04))

Preview release none [±]
Written in JavaScript, HTML
Operating system Cross-platform
Available in English, French, Italian, Portuguese, Spanish
Type Laboratory informatics software
License(s) Modified MIT License

OpenEpi is a free open-source epidemiological statistics toolset. The tools are all web-based, programmed in HTML and JavaScript. The toolset can be utilized either from the main website or downloaded and ran from a desktop system.[2]

Product history

In late 2002, Andy Dean — former chief of the U.S. Centers for Disease Control and Prevention's Epi Info Development Team — teamed up with Emory University epidemiologist Kevin M. Sullivan to work on replacements for DOS-based epidemiological statistics calculators. The team chose JavaScript as the platform, deeming it as one that at the time offered "the widest distribution and that require[d] the least expensive tools to develop."[1] By early 2003, the duo had enlisted numerous individuals to provide volunteer contributions to the open-source project. On January 1, 2004, the team announced the beta tag assigned to the project was removed and OpenEpi was stable for use, though it's not clear what version number, if any, was associated with that release.[1] On April 24, 2007, the functionality of the toolset moved away from pop-up windows to a "tabbed interface," and a Windows-based installation file was created for it.[3]

In early March of 2008, the development team announced the OpenEpi site had been accessed one million times by users in 155 countries. That same month toolset updates began receiving a public version number, beginning with version 2.2.1.[3] Released in September 2010, version 2.3.1 was long the latest version of the software. However, an update in the form of version 3.0 was released on April 4, 2013, featuring better support for mobile devices.[4]

The last known release of OpenEpi is 3.03a, in May 2015.[5] Six years later and with no new news or new releases, it's unclear if the project is abandoned or discontinued.


Features of OpenEpi include[6] :

  • hundreds of statistical calculators
  • pair-matched analysis
  • diagnostic method evaluation
  • random number generator
  • stratified tables
  • screening tests
  • ability to save result files
  • ability to load demo data from result files
  • automatic column and row totaling

Hardware/software requirements

As the toolset is web-based, all that is needed is a JavaScript-enabled web browser.

Videos, screenshots, and other media

Entities using OpenEpi

Further reading

External links