On 12/20/2009 04:56 PM, Or Duek wrote: > I don't have missing data. > about what I need. > Lets say the drug*strain interaction is significant - now I want to check > for drug under the levels of strain - compare drug 1 and 2 only on strain 1 > and then only on strain 2. > Or I'd like to compare the strains under levels of exposure. > This is the kind of data I fail to see in summary() but it is important to > understand the interactions. > thank you. >
Do you main pairwise multiple comparison tests like Tukey Honest Significant Difference tests? Then you could use TukeyHSD in the stats package or see the DTK package (Dunnett-Tukey-Kramer Pairwise Multiple Comparison Test Adjusted for Unequal Variances and Unequal Sample Sizes) Stephan ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
