Epidemiology teaching tools

The Massey University EpiCentre have developed Adobe Flash applications to make the job of teaching epidemiology a little bit easier.

How to open applications

The links below will open each application up in a new window. Alternatively, to run the tools on your own computer off line, zip files with the component files are provided. Two files are required to be in the same folder: *.SWF and *.XML. Once unzipped, double click on the *.SWF file. The application should open in your default web browser. If you want to add an additional language simply edit the XML file as you see fit.

You will need to download Adobe Flash Player to view these applications.


Measures of association application

Summary measures from a 2 by 2 table. A 'classic' 2 by 2 table. After entering cell frequencies risk ratio, odds ratio, attributable risk, attributable fraction, population attributable risk and population attributable fraction are returned (along with their 95% confidence intervals).

Click on the help buttons to get an interactive explanation of (tricky) things like population attributable risk and population attributable fraction.


2by2_table_measures_association7.swf (326 KB)

Measures of health application

Explanation of the relationship between incidence and prevalence.


water5.swf (175 KB)

Programming: Thanh Hoa Nguyen and Sean Macintyre.
Design: Mark Stevenson and Daan Vink.


Diagnostic tests

2 by 2 table

Summary measures from a 2 by 2 table. Again, a 'classic' 2 by 2 table. After entering cell frequencies for diagnostic test data apparent and true prevalence, sensitivity and specificity, and positive and negative predictive values are returned (along with their 95% confidence intervals).


2by2_table_V8.swf (527 KB)

Electric nomogram

The electric nomogram. After entering the estimated pre-test probability of disease and test characteristics (as either test sensitivity and specificity or as a likelihood ratio) the post-test probability of disease is returned.


Nomogram_V9.swf (401 KB)

Sensitivity and specificity

Understanding sensitivity and specificity using the right side of the brain. This is an interactive version of material presented in the following article: Loong T-W (2003) Understanding sensitivity and specificity with the right side of the brain. British Medical Journal, 3327, 716 - 720.


SE_SP_100balls_V6.swf (445 KB)



Questions and feedback

We welcome any feedback (and suggestions). Please get in touch.

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