About jowolfe79

jowolfe79 · ‎03-13-2022

I have used the following to calculate Cohen's d with PROC TTEST and I am wondering if there is a way to do something similar with PROC GLM so that I can calculate Cohen's d from the LSMeans. proc ttest DATA=surveydata plots=none; class X; var A B C ods select ConfLimits; ods output ConfLimits=CL; run; data CohenD; set Cl(where=(method="Pooled") rename=(Mean=MeanDiff)); CohenD = MeanDiff / StdDev; run; proc print data=CohenD noobs; var Variable Class Method MeanDiff StdDev CohenD; run; Here is my CURRENT PROC GLM STATEMENT. I want to be able to use the same data statement as above to calculate Cohen's d. PROC GLM DATA=surveydata PLOTS=none; CLASS X; MODEL A B C = X; LSMEANS X /adjust=bon; RUN; Is there a way to do this? Thank you for any help!!

jowolfe79 · ‎03-09-2022

Thank you so much!!! This is exactly what I needed.

jowolfe79 · ‎03-09-2022

I see that you asked for my data in a data step. I am really not familiar with the syntax since I upload Excel spreadsheets, but here's my best guess at a simplified version of my data data surveydata; input ResponseID SResponse Comp OriginalSocial Abrasive GetRequest SpeakerGender; datalines; 01 PFF 3.2 5.6 5.0 4 F 02 ISTATE 4.8 2.1 1.0 6 F 03 PFF 3.8 5.9 5.1 4 M Is that close enough? Is there a way that SAS can spit out this simple calculation: Cohen's d = (M2 - M1) ⁄ SDpooled Here's a macro for doing it, but I am having trouble figuring out how to run the macro.

jowolfe79 · ‎03-09-2022

The thread uses Proc Mixed and I simply do not understand it. Why is this not part of t-test or GLM? PROC GLM has an effectsize option, but it doesn't report Cohen's d. I have a dataset with two independent groups. I want an easy way to do this calculation. Cohen's d = (M2 - M1) ⁄ SDpooled SDpooled = √((SD12 + SD22) ⁄ 2) Can this be done as part of a t-test, means, or GLM PROC? Here's my means statement which gets me all of the calculations I need to do the procedure by hand. I am fine having to run it separately for each dependent variable: PROC MEANS DATA=surveydata(where=(Scenario="S1" AND SpeakerGender="F")) ; CLASS SResponse; Var Comp OriginalSocial Abrasive GetRequest; RUN;

jowolfe79 · ‎03-09-2022

I am trying to calculate Cohen's d in SAS. This is such a common statistic, I do not understand why it is not available in SAS. I can calculate it by hand or using an online calculator like https://www.socscistatistics.com/effectsize/default3.aspx But I will need to do it 100 times and am certain to make an error copying and pasting data. I found a macro for calculating effect size but I cannot get it to run. There must be simple code I can use to do the calculation in the above website within SAS. Any help is appreciated. Thank you!

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Cohen's d in GLM

Re: Easy way to calculate Cohen's d

Re: Easy way to calculate Cohen's d

Re: Easy way to calculate Cohen's d

Easy way to calculate Cohen's d

Cohen's d in GLM

Re: Easy way to calculate Cohen's d

Re: Easy way to calculate Cohen's d

Re: Easy way to calculate Cohen's d

Easy way to calculate Cohen's d