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From | Israel Arroyo <hypmod@hotmail.com> |
To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
Subject | Re: st: Fisher's exact test |
Date | Thu, 3 Apr 2014 19:19:41 +0200 |
Fisher's exact test is true under the sharp null hypothesis(of no effect at the unit level). If that H0 is useful depends on the case at hand. El 03/04/2014, a las 18:31, "Gwinyai Masukume" <parturitions@gmail.com> escribió: > Hi, > > According to some experts, "The traditional Fisher's exact test should > practically never be used." > Lydersen S, Fagerland MW, Laake P. Recommended tests for association > in 2 x 2 tables. Stat Med. 2009; 28(7):1159-75. > http://www.ncbi.nlm.nih.gov/pubmed/19170020 > > The convention seems to be if any of the boxes in a 2x2 table has less > than 5 entities Fisher's exact test should be used. > > When is it correct/appropriate to use Fisher's exact test? > > With thanks, > Gwinyai > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/statalist-faq/ > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/