Summary
Six operational definitions of the concept of major depression were submitted to empirical evaluation in 600 psychiatric inpatients. Special attention was given to the comparison of major depression in DSM-III-R and ICD-10. The data base created by a polydiagnostic interview revealed relevant classificatory differences between the six definitions under study. Sources of different diagnostic base rates were: inclusion or omission of anhedonia as an obligatory mood criterion; minimal number of syndrome criteria required for the syndrome diagnosis; different width and reference points of time criteria; exclusion rules for co-existing schizophrenic symptoms and for previous nonaffective and manic episodes. The empirically evaluated overlap between pairs of diagnostic definitions was less than excellent in most of the diagnostic definitions under study; only the DSM-III and DSM-III-R definitions agreed with each other to a highly comparable degree. The relatively good agreement of the 1989 draft definition of ICD-10 for major depression (“mild depression”) with the other five operational definitions (kappa=0.69) led us to expect that this definition should receive sufficient international acceptance.
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Philipp, M., Maier, W. & Delmo, C.D. The concept of major depression. Eur Arch Psychiatry Clin Nuerosci 240, 266–271 (1991). https://doi.org/10.1007/BF02189538
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DOI: https://doi.org/10.1007/BF02189538