On Wed, Mar 6, 2013 at 7:15 PM, Anthony Fulginiti <fulginit@usc.edu> wrote:
> Although I did not post the initial question, I welcome the helpful book reference. I have been using the Singer and Willett book, "Applied Longitudinal Data Analysis" but looked at Fitzmaurice website
> and found it to be another great source. Related to the post: I followed a similar modeling strategy as Tom (specifying the polynomial function of time that best fit the data first and subsequently adding
> variables of central interest and controls) but plan to reexamine the issue with the explanatory vars in the model.
Regression splines may be a good way to go about getting a flexible
specification for age. If you know that there are a few key ages, put
knots there.
--
JVVerkuilen, PhD
jvverkuilen@gmail.com
"It is like a finger pointing away to the moon. Do not concentrate on
the finger or you will miss all that heavenly glory." --Bruce Lee,
Enter the Dragon (1973)
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/
