[Helen Fay]

Thank you Clyde,
I've tried to use binomial as you stated by this is what stata returned:

binomial(2+7, 2, 0.5)
unrecognized command: binomial
r(199);

Where do you think there a problem?

[Helen Fay]

Finally i found the way by tabulating: display binomial(2+7, 2, 0.5)!

[Marta Heilbrun]

Thank you -
I found the answer earlier in the thread
Code:
by case_id (shuffle), sort: keep if _n == 1
to

Code:
by case_id (shuffle), sort: keep if _n <= 4

[Clyde Schechter]

Look at the second to last command. Instead of -keep-ing if _n == 1, -keep if _n<= 3- will give you (up to) 3 controls per case.

[Helen Fay]

Hi everyone,
I have performed Mc Neymar chi square test in Stata and obtain the attached output. Which measure of variability do I report please?

[Clyde Schechter]

#80 is completely off topic for this thread. It is easy to think of these threads a dialogs between a questioner and a responder. But they are not just that. These pages are visited by others who read along on topics of interest, and yet others who come searching specific topics. When threads go off topic, those people end up either wasting their time looking at posts that are irrelevant to their needs, or fail to find what they are looking for because it is buried in some thread with an inappropriate title for the content.

Please repost this as a New Topic. When you do, also state your specific research goal and state whether the data were gathered as a cohort or cross-sectional design or as a case-control design, as your question cannot be answered without that information.