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st: chi-2 test on treatment and control groups


From   "Alexander Nervedi" <alexnerdy@hotmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: chi-2 test on treatment and control groups
Date   Thu, 01 Sep 2005 22:05:29 +0000


table year treatment, c(mean output)

Pre Post
-----------+------------------------+----------
Y1 | 26 33 | 99
Y2| 36 66 | 132
-----------+------------------------+----------
Total | 62 99 | 231

provides me a distribution of the mean output across two pre-treatment and two post-treatment years. is there any way i can get a report of chi2 test for (Y2 (pre) & Y1 (post)), (Y1(pre) and Y2(post) and overall pre-and post?

The objective is see if there were statistically disntinguishable differences in output across treatment and control groups.

thanks,

alnerdy

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