>Hi, > is it possible to do an equivalence test on paired quantitative datas >in R? Is there a way to calculate sample size for such tests? > >I've tried to find some documentation on that subject but I was >unsuccessfull. >I'll be happy with any links on equivalence test. If such a test does'nt >exist in R, i'll do it manually if I find a method to do so. > >Best regards > >Blaise
The sample size for an equivalence trial with normally distributed outcomes can be calculated by n <- 2 * s^2 / delta^2 * (qnorm(alpha/2) + qnorm(beta/2))^2 s = standard deviation delta = clinically important difference alpha = Type I error beta = Type II error -- Ross Darnell ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help