Hello! I need to analyse a biological study. The study design is rather simple. It includes 3 groups. 1 control group and 2 test groups. The two test groups are treated with the same drug but different doses. Each group has approximately 14 observations and I look at around 600 variables. I already used an one way ANOVA to determine the significant hits between the groups. However, I now want to know if there is a quantitative effect between the treatment doses. In other words, is the treatment effect (the difference between the control group and a test group) bigger when you use a lower or a higher dose of the same drug. I also need to include 1 or 2 co-variates in the analysis.
Unfortunately, I do not know if there is a statistical test/technique in R which I can use to answer this question. Any advise is very much appreciated. syrvn -- View this message in context: http://r.789695.n4.nabble.com/Quantitative-analysis-of-treatment-effects-tp4635094.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
