tailieunhanh - báo cáo khoa học:" Rasch analysis of the Hospital Anxiety and Depression Scale (HADS) for use in motor neurone disease"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Rasch analysis of the Hospital Anxiety and Depression Scale (HADS) for use in motor neurone disease | Gibbons et al. Health and Quality of Life Outcomes 2011 9 82 http content 9 1 82 HEALTH AND QUALITY OF LIFE OUTCOMES RESEARCH Open Access Rasch analysis of the Hospital Anxiety and Depression Scale HADS for use in motor neurone disease Chris J Gibbons1 2 Roger J Mills 1 Everard W Thornton2 John Ealing3 John D Mitchell43 Pamela J Shaw5 Kevin Talbot6 Alan Tennant7 and Carolyn A Young1 Abstract Background The Hospital Anxiety and Depression Scale HADS is commonly used to assess symptoms of anxiety and depression in motor neurone disease MND . The measure has never been specifically validated for use within this population despite questions raised about the scale s validity. This study seeks to analyse the construct validity of the HADS in MND by fitting its data to the Rasch model. Methods The scale was administered to 298 patients with MND. Scale assessment included model fit differential item functioning DIF unidimensionality local dependency and category threshold analysis. Results Rasch analyses were carried out on the HADS total score as well as depression and anxiety subscales HADS-T D and A respectively . After removing one item from both of the seven item scales it was possible to produce modified HADS-A and HADS-D scales which fit the Rasch model. An 11-item higher-order HADS-T total scale was found to fit the Rasch model following the removal of one further item. Conclusion Our results suggest that a modified HADS-A and HADS-D are unidimensional free of DIF and have good fit to the Rasch model in this population. As such they are suitable for use in MND clinics or research. The use of the modified HADS-T as a higher-order measure of psychological distress was supported by our data. Revised cut-off points are given for the modified HADS-A and HADS-D subscales. Introduction The Hospital Anxiety and Depression Scale HADS 1 is a reliable and potentially valid 2 3 measure for detecting depression and anxiety. The scale was designed to exclude .