Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Stratified cox regression: How many indivduals contribute to the analysis


From   Grethe Søndergaard <dkstatstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Stratified cox regression: How many indivduals contribute to the analysis
Date   Thu, 7 Apr 2011 15:00:45 +0200

Hi,

I am analysing my data using a stratified cox regression model. I use
a sibling statum variable, taking the same value for individuals who
are full siblings. The individuals in the data set have between 1 and
5 full siblings.

(Variables in the data set):
Person_ID
Father_ID
Mother_ID
Exposure
Outcome
Number_of_siblings
...

Only siblings who discordant on exposure and where at least one of
them experiences the outcome contribute to the analysis. Is there a
way to find out how many of the siblings in my data that contribute –
e.g. by using “expand”?

Thank you

*
*   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   |   Site index