Application of Cluster Analysis in the Classification of Depression

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Abstract
This paper reports a replication stùdy of a four-group cluster-analytic typology of depressed patients. Several hierarchical agglomerative clustering procedures were applied on the original patient sample using a slightly reduced variable pool. The best replication obtained used Ward’s error sum of squares method and was stable on iterative relocation. Three groups, psychotic depressives, anxious depressives, and young depressives with personality disorders replicated well, while hostile depressives failed to separate clearly from the young depressives.

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