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Iso‐ and Anisoasymmetry Testing in Pre‐post Rating Designs
Author(s) -
Heilmann W.R.,
Lienert G. A.
Publication year - 1987
Publication title -
biometrical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.108
H-Index - 63
eISSN - 1521-4036
pISSN - 0323-3847
DOI - 10.1002/bimj.4710290112
Subject(s) - contingency table , homogeneity (statistics) , statistics , econometrics , marginal distribution , mathematics , random variable
It is suggested to test against anisoasymmetry rather than against marginal homogeneity if (1) a pre‐post treatment matched pairs contingency table is ordinally scaled by clinical ratings and if (2) the alternative to marginal homogeneity is a shift in location from pre‐ to post treatment ratings. Testing against anisoasymmetry may detect treatment effects which are not manifest in marginal inhomogeneities.