On Tue, 22 Jul 2008 08:28:35 -0700, Turner, G. Marc wrote: >Mike Palij wrote: >> (e.g., what is a nonparametric t-test?) > >It actually seems to be "common" in biostats and, from what little I >know, is an alternative name for the Fisher-Pitman permutation test.
I don't believe that they were referring to the Fisher-Pitman permutation test, instead, the reference that they give is for an article that uses generalized estimating equations (GEE). If you have Jstor access see: * GEE with Gaussian Estimation of the Correlations When Data Are Incomplete * Stuart R. Lipsitz, Geert Molenberghs, Garrett M. Fitzmaurice, Joseph Ibrahim * Biometrics, Vol. 56, No. 2 (Jun., 2000), pp. 528-536 * Publisher: International Biometric Society * Stable URL: http://www.jstor.org/stable/2676997 The approach described in this paper I believe would allow the original researchers to use all of the cases even if they had dropped out by posttest. I don't think that the Fisher-Pittman test allows for missing data. Moreover, I believe that the Fisher-Pittman test is sensitive to inequality of means and of variances, so one would have to follow a specific procedure to seperate tests of means from tests of variances. -Mike Palij New York University [EMAIL PROTECTED] --- To make changes to your subscription contact: Bill Southerly ([EMAIL PROTECTED])
