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  • Title: Factor analysis of the Beck Depression Inventory-II with patients with chronic fatigue syndrome.
    Author: Brown M, Kaplan C, Jason L.
    Journal: J Health Psychol; 2012 Sep; 17(6):799-808. PubMed ID: 22104663.
    Abstract:
    This study examined the properties of the Beck Depression Inventory-II (BDI-II) in a sample of 111 patients with chronic fatigue syndrome (CFS). Exploratory factor analysis identified two factors. The mean score for the Somatic-Affective factor was significantly higher than the Cognitive factor. Convergent and discriminant validity were assessed for BDI-II total score, the two factor scores, and the BDI for Primary Care (BDI-PC). The BDI-PC and Cognitive factor demonstrated superior validity. Results suggest patients endorse BDI-II somatic items that overlap with CFS symptoms at a high rate. Factor scores should be evaluated separately, or the BDI-PC should be utilized with this population.
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