Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: AGE at event occurrence as the time variable in mortality analysisrather than time between entry into follow up an event occurrence


From   uri goldbourt <goldbu1@post.tau.ac.il>
To   statalist@hsphsun2.harvard.edu
Subject   st: AGE at event occurrence as the time variable in mortality analysisrather than time between entry into follow up an event occurrence
Date   Sun, 07 Sep 2008 07:27:19 +0300

In an epidemiological study where we follow up very old individuals the
importance of time till event (say, mortality) pales in comparison to the
actual age of the individual when the endpoint event occurred. Using stcox
(for example) we would seek to estimate the event hazard ratios associated
with several predictors. In a cohort which spans over a meaningful age range
the age when the event occurs rather than how long it took to occur since
that person entered follow up which will matter. So instead of the later the
better we would like to say the older the better.

What is the accurate way to stset the data so that age at event(assuming of
course it is included for each event) become the time variable?

Thanks, UG

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index