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hi, I'd like to do graphs like shown on the right panel on the following link: http://www.clinchem.org/cgi/content/full/53/8/1544/F1 (if link doesn't work see attached file) Any help and ideas highly appreciated, thanks in advance. Thomas von K?nel Human Genetics Uni Berne

...an example application using gnls(), and there is a test using nlme() and group dependent values for t1 and t2. Therefore, I would recommend the proposed patch for your kind consideration. Johannes Ranke [1] https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17954 [2] https://doi.org/10.1093/clinchem/24.11.1895 [3] https://doi.org/10.1016/j.aca.2003.12.047 [4] https://doi.org/10.1016/j.ejps.2017.05.021 [5] https://doi.org/10.3390/environments6120124 [6] https://pkgdown.jrwb.de/mkin/dev/reference/sigma_twocomp.html [7] https://doi.org/10.1201/b17203

...ession on the whole dataset, is the comparison of Rsq and prediction errors between these two approaches - page 1502. There's a substantial difference in favor of the bootstrap approach. -- Michal J. Figurski Gustaf Rydevik wrote: > The url for the mentioned paper is at: > http://www.clinchem.org/cgi/content/full/48/9/1497 > > The bootstrap as applied in that paper is used to evaluate different > regression models against each other (though I wonder how sensible it > is to look at 26 different models with only 50 data points), which to > me seem like an ok usage. > Th...