ANOVA post hoc test for only specific comparisons (contrasts)

SAS_Muggle — Fri, 12 Apr 2024 17:28:25 GMT

I have some data where I have 2 dependent variables, method (1 or 2), and location (1, 2, 3, or 4).

I ran an anova and got a significant result. Thus I want to do post hoc comparisons. I'm not interested in all comparisons, but only for location1 (method 1 vs 2), for location2 (method 1 vs 2), etc. How can I do this in proc glm?

I need these adjusted p-values to report in my paper. Is the only way to do it using contrasts and then adjust my alpha (bonferroni)? I think it will be too conservative.

Re: ANOVA post hoc test for only specific comparisons (contrasts)

Ksharp — Sat, 13 Apr 2024 07:57:59 GMT

You could use
LSMEANS locateion/diff pdiff adjust=turkey ;
and choose the mothod you like.

Also could use ESTIMATES rather than CONTRAST:
https://support.sas.com/kb/38/384.html

topic ANOVA post hoc test for only specific comparisons (contrasts) in SAS Procedures

ANOVA post hoc test for only specific comparisons (contrasts)

Re: ANOVA post hoc test for only specific comparisons (contrasts)