Thank so much to everybody who found time to answer my question All your messages are of great help. Good luck
У Пят, 25/02/2011 у 05:46 -0800, Dennis Murphy піша: > And in that vein, the recently released MethComp package by Bendix > Carstensen may be of service. > > HTH, > Dennis > > On Fri, Feb 25, 2011 at 5:39 AM, Marc Schwartz <marc_schwa...@me.com> > wrote: > On Feb 24, 2011, at 4:50 PM, Denis Kazakiewicz wrote: > > > Dear R people > > Could you please help with following > > > > Trying to compare accuracy of tumor size evaluation by > different > > methods. So data looks like > > > > id true metod1 method2 ... > > 1 2 2 2.5 > > 2 1.5 2 2 > > 3 2 2 2 > > > > etc. > > > > Could you please give a hint how to deal with that. > > Seems like {merror} does not suite to me because I am trying > to compare > > accuracy of measurements with their true known values not > just overall > > agreement of methods. > > Moreover sample size is ridiculously small (33 patients) so > ANOVA is not > > much of help (or is it?) > > Any suggestions, hints and even guesses are highly > appreciated. I am > > stuck a bit. > > > > Denis, > > I would suggest that you start here: > > http://www-users.york.ac.uk/~mb55/meas/meas.htm > > This covers various resources pertaining to the design and > analysis of measurement studies, primarily based upon methods > by Bland and Altman. > > HTH, > > Marc Schwartz > > > ______________________________________________ > 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. > > ______________________________________________ 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.