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Using Patient Health Questionnaire-9 item parameters of a common metric resulted in similar depression scores compared to independent item response theory model reestimation
Department for Psychotherapy and Biopsychosocial Health, Danube University Krems, Dr.-Karl-Dorrek-Straße 30, 3500 Krems, Austria
Department of Psychosomatic Medicine, Center for Internal Medicine and Dermatology, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
Department of Psychosomatic Medicine and Psychotherapy, University Medical Center Hamburg-Eppendorf & Schön Klinik Hamburg Eilbek, Martinistraße 52, 20246 Hamburg & Dehnhaide 120, 22081 Hamburg, Germany
Population Health Strategic Research Centre, School of Health and Social Development, Deakin University, 221 Burwood Highway, Burwood, VIC 3125, Australia
Department of Psychosomatic Medicine, Center for Internal Medicine and Dermatology, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
Department of Quantitative Health Sciences, Outcomes Measurement Science, University of Massachusetts Medical School, 368 Plantation Street, The Albert Sherman Center, Worcester, MA 01605, USA
Department of Psychosomatic Medicine, Center for Internal Medicine and Dermatology, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
Department of Psychosomatic Medicine, Center for Internal Medicine and Dermatology, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
Institute for Social Medicine, Epidemiology and Health Economics, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany