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Báo cáo y học: " Rasch model analysis of the Depression, Anxiety and Stress Scales (DASS)"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Rasch model analysis of the Depression, Anxiety and Stress Scales (DASS) | BMC Psychiatry BioMed Central Research article Open Access Rasch model analysis of the Depression Anxiety and Stress Scales DASS Tracey L Shea1 Alan Tennant2 and Julie F Pallant 3 Address faculty of Life and Social Sciences Swinburne University of Technology P.O. Box 218 Hawthorn Victoria 3122 Australia 2Department of Rehabilitation Medicine Faculty of Medicine and Health University of Leeds D Floor Martin Wing The General Infirmary at Leeds Gt George Street Leeds LS1 3EX UK and 3School of Rural Health University of Melbourne 49 Graham Street Shepparton Victoria 3630 Australia Email Tracey L Shea - tracey.shea@buseco.monash.edu.au Alan Tennant - a.tennant@leeds.ac.uk Julie F Pallant - jpallant@unimelb.edu.au Corresponding author Published 9 May 2009 Received 13 October 2008 BMC Psychiatry 2009 9 21 doi l0.ll86 l47l-244X-9-21 Accepted 9 May 2009 This article is available from http www.biomedcentral.cOm l47l-244X 9 2l 2009 Shea et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http creativecommons.org licenses by 2.0 which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background There is a growing awareness of the need for easily administered psychometrically sound screening tools to identify individuals with elevated levels of psychological distress. Although support has been found for the psychometric properties of the Depression Anxiety and Stress Scales DASS using classical test theory approaches it has not been subjected to Rasch analysis. The aim of this study was to use Rasch analysis to assess the psychometric properties of the DASS-2l scales using two different administration modes. Methods The DASS-21 was administered to 420 participants with half the sample responding to a web-based version and the other half completing a traditional pencil-and-paper version. Conformity of DASS-2l scales to a