Hi Chen, >From the documentation (see ?icc) "$value: the intraclass correlation coefficient."
As an example: > set.seed(1) > result <- icc(matrix(rnorm(20), ncol = 2)) > result$value [1] -0.3148786 HTH, Josh On Tue, Aug 3, 2010 at 8:50 AM, chen chao <chench...@gmail.com> wrote: > Hi, all > > > There are 62 samples in my data and I tested 3 times for each one, then I > want to use ICC(intraclass correlation) from irr package to test the > consistency among the tests. > *combatexpdata_p[1:62] is the first text results and combatexpdata_p[63:124] > * is the second one and *combatexpdata_p[125:186]* is the third. > > Here is the result: > > result<-icc(cbind(combatexpdata_p[1:62],combatexpdata_p[63:124],combatexpdata_p[125:186]), > "twoway") > result > Single Score Intraclass Correlation > > Model: twoway > Type : consistency > > Subjects = 62 > Raters = 3 > ICC(C,1) = -0.0664 > > F-Test, H0: r0 = 0 ; H1: r0 > 0 > F(61,122) = 0.813 , p = 0.814 > > 95%-Confidence Interval for ICC Population Values: > -0.184 < ICC < 0.086 > > > I can get the p value by result$p but when i try result$icc to get the ICC > value, it doesn't work. Is there anybody here know how to extract the > -0.0664 from the result? Many thanks. > > > -- > Chen, Chao > Psychiatry > University of Chicago > 924 E 57th St, Chicago, IL 60637 > U. S. A. > MOE Key Laboratory of Contemporary Anthropology and Center for > Evolutionary Biology, > School of Life Sciences and Institutes of Biomedical Sciences, > Fudan University > 220# Handan Road, Shanghai (200433) > P.R.China > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.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.
