@article{d9c75c3063f611df9344000ea68e967b,
title = "A validation analysis of two self-reported HAM-D6 versions",
abstract = "OBJECTIVE: The six items of the clinician-administrated Hamilton Depression Scale (HAM-D(6)) cover the core items of depressive states reflecting the antidepressive effect of medication. In this study, the two self-reported versions of the HAM-D(6) have been psychometrically validated to ensure the unidimensionality of this administration form in patients with mild-to-moderate depression. METHOD: The item response theory analysis of Mokken was used to test the unidimensionality of both the Interactive Voice Recording System (IVRS) version of the HAM-D(6) and a paper-and-pencil self-reported version (S-HAM-D(6)). Patients with typical major depression and with seasonal affective disorder were included. RESULTS: The Mokken analysis showed that the two self-reported versions of the HAM-D(6) obtained coefficients of homogeneity above 0.40, similar to the clinician-rated HAM-D(6) and thus implying unidimensionality. By contrast, the full HAM-D(17) versions (self-reported as well as clinician-rated) obtained coefficients of homogeneity below 0.40, implying that the HAM-D(17) is a multidimensional scale. CONCLUSION: The analysis show that both the IVRS version and the S-HAM-D(6) version are unidimensional self-rating scales for the measurement of depressive states.",
author = "P Bech and P Wilson and T Wessel and M Lunde and M Fava",
note = "Keywords: Adult; Antidepressive Agents; Depressive Disorder, Major; Diagnostic and Statistical Manual of Mental Disorders; Female; Humans; Male; Psychometrics; Questionnaires; Severity of Illness Index",
year = "2009",
doi = "10.1111/j.1600-0447.2008.01289.x",
language = "English",
volume = "119",
pages = "298--303",
journal = "Acta Psychiatrica Scandinavica",
issn = "0001-690X",
publisher = "John Wiley and Sons Inc.",
number = "4",
}