Epi Info 7.2 Download For Mac

In this course, we will use a free statistical software called Epi Info as a tool to generate a variety of statistics that assist us in data analysis.You can either download Epi info on your own computer if you are a PC user by following Step 1 below, or you can remotely access Epi Info (on a university server) by following Step 1A below if you are a Mac user since a MAC version of Epi Info is NOT yet available.

Download Epi Info - Conduct professional public health-related surveys and analyze data in a very time-efficient manner with the help of this comprehensive and useful application.

Step 1. Download Epi Info (only applies for PC, not Mac)

  • First go to the website https://www.cdc.gov/epiinfo/support/downloads.html
  • Under Download Version 7.2, click on ' Download ZIP File'. See arrow below.
  • This will take you to the screen asking you to save the 'Epi_Info_7.zip'. Go ahead and click on 'save file'.
  • Go to where you have saved/downloaded the zip file (usually by default, it is the 'download' folder under 'This PC'), open the Zip File, click on 'Launch Epi Info 7'.
  • This will take you to the screen asking you to 'Extract all', 'Run' or 'Cancel'; click on 'Extract all'.
  • Click on 'Extract' again. It will take a couple of seconds for the extraction process to complete. The screen will go back to the screen with the Epi Info 7 folder. (The icon of 'Launch Epi Info 7' looks a little different now)
  • The installation should have completed. Click on 'Launch Epi Info 7' to start using it! It should look like below.

Step 1A. Access Epi Info and EXCEL (on a university server) remotely

You can access Epi Info and EXCEL installed on a university server remotely from anywhere as long as you have internet access. To do so, following the instructions here:

  • Go to https://citrix.illinoisstate.edu and sign in with your ULID and password. This will bring you to the following screen. Click on 'Use Light Version' as arrow indicates.
  • Then select ' DESKTOPS' icon from the top menu
  • Then click on the SFCM 174 lab icon, log in as needed with your ULID and password, and click on launch Epi Info.exe as arrow indicates.

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Step 2. Downloading Datasets and Getting Started

i. Downloading Datasets

  • To download the example dataset SSI (a dataset containing information on surgical site infections in a hospital) used in tutoring videos, right click here and use the 'save link as' command to save it to a folder that you have access to. For datasets used in homework assignments, you can find them under ReggieNet - 'Assignments' and under a specific homework assignment number. You need to save these datasets to a folder that you have access to.
  • If you access Epi Info remotely (i.e. via SFCM174), you may do all your work via SFCM174. Note, when downloading a file on SFCM174, the default folder where downloaded files saved is 'This PC' - 'Downloads' folder.

ii. Opening Epi Info

  • Open Epi Info - if you access Epi Info remotely, click on the desktop icon 'Launch Epi Info.exe' to start using it!

iii. Read a Dataset to be Analyzed - 1st step of all

The following video shows you how to read a dataset in Epi Info. I have also included the written instruction below for your reference.

  • We must tell the Epi Info to read a dataset before we can analyze it.
  • Note: The dataset file can't be opened in EXCEL while you try to read it in Epi Info, otherwise you will get an error message. The dataset just has to be stored in a folder such as your memory stick or hard drive. So when you click on the file link, chose the option of 'Save file', NOT 'open file'.
  • Once you open the Epi Info, click on 'Classic' button on the bottom left corner of the page.
  • Under the left navigation bar, under 'Data', select 'Read'.
  • Under 'Database Type', click on the dropdown arrow and select 'Microsoft Excel 97-2003 Workbook (.xls)'.
  • Click on the 'Browse' button for 'Data Source', the 'Open Existing File' window opens, click on 'Browse' button again to get to the folder where you saved the data file, click on the datafile to be read and click on 'Open'. Then click 'OK'.
  • One or more worksheets will appear under 'Data Source Explorer' window. Click on the worksheet to be analyzed (usually it is the 1st on the top of the list, for example, 'sheet 1$',) and then click 'OK'.
  • In the output area, you will see 'Current Data Source: XXXXX' showing file path for your data file, 'Record Count: XX' showing number of subjects in your data and 'Date: XX' showing when data was read. The presence of this information means Epi Info have read the dataset successfully.

3. Generate Frequency Tables for Nominal and Ordinal data using Epi Info

7.2

The following video shows you how to generate frequency tables for nominal and ordinal data using Epi Info. I have also included the written instruction below for your reference.

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First, make sure we have told Epi Info to read the dataset we want to use. In the above video example, I've already read the dataset 'SSI' containing information on surgical site infections in a hospital. To generate a frequency table, do the following:

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  • In the left navigation bar, under 'Statistics', select 'Frequencies'.
  • Under the 'Frequency of' window, click on the dropdown arrow and select the variable which we would like to generate frequency table for. For example, if we would like to generate a frequency table for variable 'GENDER', we will pick the variable 'GENDER' under the 'Frequency of' window. Notice, the variable selected, in this case 'GENDER', shows up in the space/box under the 'Frequency of' window.
  • Click 'OK'.
  • A frequency table should appear in the output area under the title 'FREQ GENDER'. It should contain frequency, relative frequency in percent as well as cumulative percent, as shown in the screenshot below.
  • Note: We can generate frequency tables for multiple variables at the same time, simply select all the variables for which we would like to generate frequency table for under the 'Frequency of' window, making sure all these variables show up in the space/box under the 'Frequency of' window.
  • Note: To enlarge the output area, we can put the mouse at the line that separates the right side of the window into the two spaces, we should see the mouse turns into a two-sided arrow pointing up and down, drag the line down. In this way, all frequency tables can show up in the output area.