Hello
I have run an ancova to test if the slopes of my regression lines were different and they were. Where I am stuck is that the pairwise comparison of the interaction term isn't being allowed since the independent variable isn't a class variable (lsmeans x*covariate/ adjust=tukey pdiff).
Can anyone help me perform pairwise comparisons on the interaction term please?
Also is there a way to test if each of the different regression lines that are created by the covariate are different from 0 in the ancova design instead of running separate regressions?
Thanks!
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