Search on: cochran-armitage trend test
Goes back to the Forties or Fifties. My copy or Statistical Methods in Medical Research describes it, gives a justification, and cites: Armitage (1955) "Tests for linear trends in proportions and frequencies." Biometrics, 11, 375-386.
My copy of Snedecor and Cochran simply describes it as a linear regression on proportions and cites Yates, Biometrika 32 (1948): 176
-- David Winsemius On Dec 21, 2008, at 8:43 AM, Paulo Barata wrote:
To the R-help list, In the documentation of the prop.trend.test function in the stats package, no bibliography has been provided which would allow one to find out the theoretical basis of that function and/or details of its implementation. May I suggest that some bibliography be included, as it generally happens with other statistical functions. I currently use R 2.8.0 running on Windows XP. Regards, Paulo Barata --------------------------------------------------------------- Paulo Barata Fundacao Oswaldo Cruz - Oswaldo Cruz Foundation Rua Leopoldo Bulhoes 1480 - 8A 21041-210 Rio de Janeiro - RJ Brazil E-mail: pbar...@infolink.com.br Alternative e-mail: paulo.bar...@ensp.fiocruz.br ______________________________________________ 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.
