About Epi Info
Epi Info is statistical software for epidemiology developed by Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia (US).

Epi Info has been in existence for over 20 years and is currently available for Microsoft Windows, Android and iOS, along with a web and cloud version. The program allows for electronic survey creation, data entry, and analysis. Within the analysis module, analytic routines include 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 is an open-source project with limited support.
An analysis conducted in 2003 documented over 1,000,000 downloads of Epi Info from 180 countries.
Course outline for Epi Info
1. Introduction to Epi Info .
Overview.
Navigating Epi Info.
Analysis Components
Opening a Dataset .
Write Your Data Table Permanently to the Database .
Creating a Backup of Your Database
Reading (Importing) a Table .
Viewing Data in a List
2. Variables
Overview.
Defining a Variable .
Assign a Variable
Undefine a Variable
Recode a Variable .
Writing Results to a New Table
3. Basics Statistics.
Overview.
Calculating Derived Variables
Running a Frequency
Creating a Basic Table
Reading an Output Table.
Creating a Graph .
Creating Labels for Outputs
Using the Program Editor
4. If…Then… Statements
Overview.
Assign a Variable Based on Variable.
Assign a Variable Based on or More Variables .
5. Hypotheses tests
t-test
ANOVA
Non-parametric
6. Saved Programs .
Overview.
What are Saved Programs? .
Running a Saved Program.
Opening a Saved Program.