search for: rdci

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2008 Feb 06
1
ci.pd() (Epi) and Newcombe method
...should be zz <- qchisq(1-alpha,1) (though I think they could just as well have written xx <- z^2), since z^2 seems to be what they want for the Newcombe method, and qnorm(1-alpha/2)^2 = qchisq(1-alpha,1) This was noticed as a result of comparing results from ci.pd() with results from the RDCI module in STATA (run by someone else, since I don't have access to STATA). With the original code in ci.pd(), the Newcombe results were different between ci.pd() and STATA. After making the above change, they agreed. I would be most grateful if anyone who has also been down this path could con...