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st: RE: Comparing 2 proportions with Stata


From   Joe Canner <[email protected]>
To   "[email protected]" <[email protected]>
Subject   st: RE: Comparing 2 proportions with Stata
Date   Thu, 5 Dec 2013 17:08:21 +0000

Georges,

In addition to the previous suggestions, you can also do:

tabi 2661 23243 / 1775 7213, row chi

This uses the chi-square test instead of the large-sample z-test.  Although you have to compute the difference between the numerator and denominator, it has the advantage of being able to do Fisher's exact test if necessary/appropriate:

tabi 2661 23243 / 1775 7213, row chi exact

Regards,
Joe Canner
Johns Hopkins University School of Medicine

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of COMPAORE Georges
Sent: Thursday, December 05, 2013 11:04 AM
To: [email protected]
Subject: st: Comparing 2 proportions with Stata

Dear all,
I want to compare two following proportions 10.3% and 19.7% with respectively the following numerator (2661 & 1775) and the denominator
(25904 & 8988). 
I have not found satisfaction although my search for help.
Any help will be appreciated.
Thank you in advance
Georges COMPAORE

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