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  • Title: Facet theoretic analysis of the Hamilton-D scale.
    Author: Steinmeyer EM, Möller HJ.
    Journal: J Affect Disord; 1992 May; 25(1):53-61. PubMed ID: 1385599.
    Abstract:
    The items of the HAM-D(17-item version) were analyzed by a nonmetric (ordinal) multi-dimensional scaling procedure (Smallest Space Analysis, SSA-I) and the structure of the test items characterized within the framework of Guttman's facet theory. Two systematic components (facets) were discerned: 'centrality' and 'aspect'. Properties of the facets as well as their relations were assessed and examined empirically by analyzing the inter-relations among different items. The spatial configurations obtained by the scaling procedure were found only partially to fit the expectations derived from the facet-theory model. The facet 'centrality' was found to have a strong overriding influence over the 'aspect' facet. The results suggest the value of a new combination and selection of items reflecting different facets of depression consistently over time.
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