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Rasch analysis of the hospital anxiety and depression scale in Parkinson's disease.
Mov Disord. 2009 Mar 15; 24(4):526-32.MD

Abstract

The hospital anxiety and depression scale (HADS) is commonly used to assess mood in Parkinson's disease (PD) patients. Very few studies analyze the scale from the standpoint of item response theory. This article sought to analyze how the HADS fits the Rasch model in PD. The HADS was administered to 387 PD patients. Three sets of Rasch analyses were performed for the HADS total score, and anxiety and depression subscales (HADS-T, -A, and -D, respectively). Although the HADS-T and HADS-A displayed a good fit, with little threshold disordering and no differential item functioning, the HADS-D failed to fit the model. The person separation index, a reliability measure, was 0.87 (HADS-T) and 0.80 (HADS-A). Both HADS-T and HADS-A showed unidimensionality. Our results supported the use of HADS-T as a measure of psychological distress in PD patients. Moreover, the HADS-A was also an adequate anxiety measure. Further research is required to address the use of HADS-D in PD.

Authors+Show Affiliations

National School of Public Health and CIBERNED, Carlos III Institute of Health, C/ Sinesio Delgado, 6, Madrid 28029, Spain. jforjaz@isciii.esNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19097178

Citation

Forjaz, Maria João, et al. "Rasch Analysis of the Hospital Anxiety and Depression Scale in Parkinson's Disease." Movement Disorders : Official Journal of the Movement Disorder Society, vol. 24, no. 4, 2009, pp. 526-32.
Forjaz MJ, Rodriguez-Blázquez C, Martinez-Martin P, et al. Rasch analysis of the hospital anxiety and depression scale in Parkinson's disease. Mov Disord. 2009;24(4):526-32.
Forjaz, M. J., Rodriguez-Blázquez, C., & Martinez-Martin, P. (2009). Rasch analysis of the hospital anxiety and depression scale in Parkinson's disease. Movement Disorders : Official Journal of the Movement Disorder Society, 24(4), 526-32. https://doi.org/10.1002/mds.22409
Forjaz MJ, et al. Rasch Analysis of the Hospital Anxiety and Depression Scale in Parkinson's Disease. Mov Disord. 2009 Mar 15;24(4):526-32. PubMed PMID: 19097178.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Rasch analysis of the hospital anxiety and depression scale in Parkinson's disease. AU - Forjaz,Maria João, AU - Rodriguez-Blázquez,Carmen, AU - Martinez-Martin,Pablo, AU - ,, PY - 2008/12/20/entrez PY - 2008/12/20/pubmed PY - 2009/7/29/medline SP - 526 EP - 32 JF - Movement disorders : official journal of the Movement Disorder Society JO - Mov Disord VL - 24 IS - 4 N2 - The hospital anxiety and depression scale (HADS) is commonly used to assess mood in Parkinson's disease (PD) patients. Very few studies analyze the scale from the standpoint of item response theory. This article sought to analyze how the HADS fits the Rasch model in PD. The HADS was administered to 387 PD patients. Three sets of Rasch analyses were performed for the HADS total score, and anxiety and depression subscales (HADS-T, -A, and -D, respectively). Although the HADS-T and HADS-A displayed a good fit, with little threshold disordering and no differential item functioning, the HADS-D failed to fit the model. The person separation index, a reliability measure, was 0.87 (HADS-T) and 0.80 (HADS-A). Both HADS-T and HADS-A showed unidimensionality. Our results supported the use of HADS-T as a measure of psychological distress in PD patients. Moreover, the HADS-A was also an adequate anxiety measure. Further research is required to address the use of HADS-D in PD. SN - 1531-8257 UR - https://www.unboundmedicine.com/medline/citation/19097178/Rasch_analysis_of_the_hospital_anxiety_and_depression_scale_in_Parkinson's_disease_ L2 - https://doi.org/10.1002/mds.22409 DB - PRIME DP - Unbound Medicine ER -