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2002 Jun 26
2
contrast matrix in package multcomp
Hi,
I've got a problem building a contrast matrix for the Dunnet contrast in
package multcopm. The following works fine:
> summary(simtest(adiff ~ trial))
Simultaneous tests: Dunnett contrasts
Data: adiff by trial
Contrast matrix:
trial1 trial2 trial3 trial4 trial5
trial2-trial1 -1 1 0 0 0
trial3-trial1 -1 0 1 0 0
trial4-trial1 -1 0 0 1 0
trial5-tria...