*Sigh*. Another opt-in survey. This one from the Ada Initiative.
Take Blackduck's results with a giant fist full of salt, but do look at these trends.
I've only read through the chapter on transformations but this seems likely a truly excellent resource. Gratis for personal use.
The description of fitting coxph to time dependent data here seems to be better than any I've found yet.
Combination example code for common things and tutorial.
Answer: When considering which class to use, always choose the least complex class that will support the application. That is, use Date if possible, otherwise use chron and otherwise use the POSIX classes.
There should be a better way of finding your R package than searching though a page of short descriptions of all 2800 package.s But there isn't.
Simple R package to format model objects in a regression table like the kind that everyone reporting models wil need to do. Nice start even if one wants to modify things after that. Based on PoliSci publications but looks pretty standard for other social sciences.
David Kenny's homepage. Especially useful for resources related to mediation and moderation, but also full of stuff on other sorts of statistical modelling techniques
