Epi Info

Statistical software from the CDC Epi Info was statistical software for epidemiology developed by Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia (US). Epi Info was in existence for over 20 years and was available for Microsoft Windows, Android and iOS, along with a web and cloud version. The program allowed for electronic survey creation, data entry, and analysis. Within the analysis module, analytic routines included t-tests, ANOVA, nonparametric statistics, cross tabulations and stratification with estimates of odds ratios, risk ratios, and risk differences, logistic regression (conditional and unconditional), survival analysis (Kaplan Meier and Cox proportional hazard), and analysis of complex survey data. The software was sunset in September 2025. History The first version, Epi Info 1, was originally developed by Jeff Dean while he was in high school. It was an MS-DOS batch file on 5.25" floppy disks and released in 1985. MS-DOS continued to be the only supported operating system until the release of Epi Info 2000, which was written in Microsoft's Visual Basic and became the first Windows-compatible version. The last MS-DOS version was Epi Info 6.04d relea