Forgive a naive question, but with a 2 x 2 table why can’t you simply calculate epsilon (% diff) by hand? This technique is called elaboration, See: M Rosenberg, The Logic of Survey Analysis (Basic Books, 1968)
John F Hall (Mr)
[Retired academic survey researcher]
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From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of DKUKEC
Sent: 29 May 2013 14:53
To: [hidden email]
Subject: Re: Percent Change Crosstabs
Thank you Ryan & Bruce, Very much appreciate your replies and suggested syntax. I am looking for the following computations... for example: % Difference in recidivism rate = Treatment Recidivism % - Control Recidivism %. % Change in the recidivism = Difference % / Control Recidivism %. *************************************************************************** 2X2 CROSSTAB EXAMPLE Recidivist Non-Recidivist Total Treatment 816 1133 1949 Control 936 1013 1949 Row % Row % Row % Treatment 41.9% 58.1% 100.0% Control 48.0% 52.0% 100.0% ****** Would like to compute %************************* Difference -6.1% % Change -12.7% ***************************************************** Sincerely, Damir
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