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.