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Type: Journal article
Title: Development and validation of parallel short forms PaSA-cardio for the assessment of general anxiety in cardiovascular rehabilitation patients using Rasch analysis
Author: Abberger, B.
Haschke, A.
Tully, P.
Forkmann, T.
Berger, J.
Wirtz, M.
Bengel, J.
Baumeister, H.
Citation: Clinical Rehabilitation, 2017; 31(1):104-114
Publisher: Sage Publications Ltd
Issue Date: 2017
ISSN: 0269-2155
Statement of
Birgit Abberger, Anne Haschke, Phillip J Tully, Thomas Forkmann, Janna Berger, Markus Wirtz, Juergen Bengel and Harald Baumeister
Abstract: Objective: To develop and validate parallel short forms for the assessment of general anxiety in cardiovascular rehabilitation patients, that facilitate repeated measurement over time without contamination from residual practice effect variance. Design: Development of the parallel short forms using Rasch analysis. Validation study. Setting: Cardiac rehabilitation centres in Germany. Subjects: Cardiovascular rehabilitation patients. Interventions: Not applicable. Main measures: Parallel short forms PaSA-cardio, Hospital Anxiety and Depression Scale, Short Form Health Survey SF-12 and Structured Clinical Interview for DSM-IV Axis I Disorders. Results: Each version of the parallel short forms (PaSA-cardio-I and PaSA-cardio-II) comprises ten items. The two forms fitted to the Rasch model with a non-significant item–trait interaction (PaSA-cardio-I: chisquare = 39.49, degrees of freedom = 30, probability = 0.12; PaSA-cardio-II: chi-square = 26.56, degrees of freedom = 30, probability = 0.65). Person-separation reliability was 0.75/0.76. Unidimensionality could be verified. Correlation between the two models was 0.94 and 0.95, and correlations with the underlying item bank were 0.95 and 0.93. Validity could be confirmed. The area under the curve was between 0.88 and 0.97 for PaSA-cardio-I and between 0.92 and 0.95 for PaSA-cardio-II.
Keywords: Assessment; anxiety; cardiac rehabilitation; psychometry
Rights: © The Author(s) 2016
RMID: 0030042568
DOI: 10.1177/0269215515627288
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Appears in Collections:Medicine publications

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