topic Re: Pre and Post Test Regression Help in SAS Programming

Pre and Post Test Regression Help

mqdri — Tue, 01 Oct 2019 21:00:26 GMT

Hello!

I am looking for some assistance in analyzing my data:

One group (n=17), all received 6 interventions and scores were collected PRE and POST intervention. I am interested in seeing the relationship between all 6 interventions in how this helped improve overall well-being for the client. I was thinking my dependant variable could be 'Overall Improvement' (Binary Y/N) and the predictors would be each intervention, but I am confused about the pre and post scores and how to put that into a regression analysis in SAS.

Any advice or help would be greatly appreciated !

Thank you!

Re: Pre and Post Test Regression Help

PaigeMiller — Tue, 01 Oct 2019 21:17:13 GMT

17 data points and 6 interventions? You'd need almost zero noise to be able to determine any effects, or perhaps one intervention with a very strong effect and the rest with almost no effect. I'm not optimistic that you will make anything of this data.

However,

proc logistic data=mydata;
    class intervention1-intervention6;
    model overall_improvement=intervention1-intervention6;
run;

Good luck.

Re: Pre and Post Test Regression Help

mqdri — Wed, 02 Oct 2019 14:12:04 GMT

Thank you Paige! I am going to try this now and see how it goes. PS. I know, the small sample size is really unfortunate