On 28 Oct 2003 03:12:56 -0800, [EMAIL PROTECTED] (R Jenkins) wrote: > I would like to calculate an intraclass correlation coefficient, to > measure agreement between raters. I know that you can use the > command "loneway" along these lines: > > loneway measurement rater > > ...but I have repeated measurements by the same raters on several > different objects (the objects being indentified by the variable "ID"). > I want to use the model: > > anova measurement id rater > > How would I calculate an ICC from the sums of squares given in the > resulting ANOVA?
I do not use STATA. But I do know that there are multiple models for computing ICCs, depending on what assumptions you are making and what statement you are making. SPSS has online documentation for 3 popular models, along with macros. Maybe this will help directly, or provide some useful reference. http://www.spss.com/tech/stat/macros/Iccsf.htm -- Rich Ulrich, [EMAIL PROTECTED] http://www.pitt.edu/~wpilib/index.html "Taxes are the price we pay for civilization." . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
