Thanks to the connection from my coworker Zack Gao at CDC I've been introduced to Andy Dean and his OpenEpi.com open source project. I reached out to Andy and his collaborators offering my assistance and they were happy to accept the help.
Originally funded by a grant from the Bill and Melinda Gates Foundation to Emory University's Rollins School of Public Health, the project's goals are to offer free tools for health professionals everywhere:
Needless to say, this is a great project that benefits the epidemiology and medical community around the world. I am happy to get to contribute to it.
OpenEpi provides statistics for counts and measurements in descriptive and analytic studies, stratified analysis with exact confidence limits, matched pair and person-time analysis, sample size and power calculations, random numbers, sensitivity, specificity and other evaluation statistics, R x C tables, chi-square for dose-response, and links to other useful sites.
Internet Explorer: FireBug Lite and IE Developer Tools
I will cover FireBug in just a moment for Firefox, but be aware there is a "Firebug Lite" available for IE too. Find out about it here: https://getfirebug.com/firebuglite
Since the IE Developer Tools are built in, let's cover those here.
How to Find
Hit F12 or go to Tools menu > Developer Tools.
What You Get
This gives you a number of powerful features, like:
- HTML Element DOM Inspection
- CSS in-line editing
- Console window (Like an immediate window in an IDE)
- Network Request capture and playback
Here's a screen capture of me debugging the CalcStats method on OpenEpi.com's Std.Mort.Ratio module:
|Internet Explorer Developer Tools debugging OpenEpi.com Std.Mort.Ratio module|
FireFox: FireBug and the Web Developer Toolbar
FireFox is probably still my favorite browser, but Chrome is getting closer every day. The godfather of powerful browser tools has to be The Web Developer Toolbar, but it's almost certainly been overthrown by FireBug.
How to Install
Visit http://getfirebug.com and install it, now. Right away. Do not delay.
You should watch a "pyroentomologist" give this introduction too:
Here's me inspecting the HTML and CSS of an item in OpenEpi. Notice the CSS tab shows the explicit styles and the computed styles. This is extremely helpful information.
|Using FireBug to inspect the table cell properties of an EStratum table in OpenEpi.com|
You should also install and become familiar with the Web Developer Toolbar: https://addons.mozilla.org/en-US/firefox/addon/web-developer/
Google Chrome: Developer Tools or Firebug Lite
You can also run Firebug Lite in Chrome, but Chrome has its own built in tools as well. So let's just highlight that.
How to Find
Hit F12 or find it under the menu.
What you Get
You'll get all the same things we've discussed, but some of them more impressive or more fully featured. See the screen shot for an example of the box model metrics for the same element inspected above in Firebug.
|Chrome's developer tools with box model metrics|