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Tijdschrift voor Psychiatrie 53 (2011) 1, 49 - 55

Short report

The inter-rater reliability of the Dutch version of the core. A validation study conducted among depressed elderly in-patients

D. Rhebergen, A. Rouwenhorst, H.C. Comijs, A. Dols, A.T.F. Beekman, C.B. Terwee, D. Arts, M.L. Stek

background Assessment of psychomotor symptoms may lead to better classification of depressive disorders.
aim To test the inter-rater reliability of the Dutch version of core, an observational instrument for psychomotor symptoms.
method The core was used with 37 depressed in-patients and was scored by 5 psychiatrists. Intra-class correlation (icc-agreement) was tested.
results iccagreement of the total score (0.80), and the subscales non-interaction (0.74), retardation (0.70) and agitation (0.79) were sufficient.
conclusion The Dutch version of the core is a reliable instrument.

keywords depression, observational instrument, psychomotor symptoms, validation