How test contrasts/coefficients of Repeated-Measures ANOVA?
Ben Meijering <b.meijering <at> student.rug.nl> writes:
I'm doing a Repeated-Measures ANOVA, but I don't know how to test its contrasts or where to find the p-values of its coefficients. I know how to find the coefficient estimates of a contrast, but not how to test these estimates. First I do something like: y.aov <- aov(y ~ fac1 * fac2 + Error(subj/(fac1 * fac2)), data=data) Then, with coef(y.aov) I get the coefficients (which are, by default, treatment contrasts?), but p-values are not provided.
See model.table and se.contrast; and consider using lme in package nlme as an alternative which make live much easier, if it can handle your (over?)complex nesting. Dieter