Ozyemisci-Taskiran O, Demirsoy N, Atan T, Yuksel S, Coskun O, Aytur YK, Tur BS, Karakas M, Turak O, Topal S. Development and Validation of a Scale to Measure Fear of Activity in Patients With Coronary Artery Disease (Fact-CAD).
Arch Phys Med Rehabil 2019;
101:479-486. [PMID:
31562874 DOI:
10.1016/j.apmr.2019.09.001]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/25/2019] [Accepted: 09/06/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE
To develop and validate a scale to measure fear of activity in patients with coronary artery disease.
DESIGN
Psychometric study.
SETTING
Outpatient cardiology clinics.
PARTICIPANTS
The scale was applied to patients who had myocardial infarction, coronary artery bypass grafting, or percutaneous coronary intervention within the last 12 months (N=250).
INTERVENTIONS
A scale for fear of activity in patients with coronary artery disease (Fact-CAD) was created through semistructured focus group interviews with patients. Face and content validity of Fact-CAD was verified.
MAIN OUTCOME MEASURES
Psychometric analysis included model fit, unidimensionality, reliability, local dependency, differential item functioning, and external construct validity. Analyses were performed using the Rasch Analysis Model.
RESULTS
Fact-CAD scale was a reliable (high Person Separation Index of 0.89) and valid (unidimensional, no misfit, local independency supported, no residual correlations) measure of fear of activity. Three items showed differential item functioning according to employment status, marital status, and angina pectoris, which were not assigned as real item bias by experts and remained in the model.
CONCLUSION
Fact-CAD was supported by Rasch analysis as a psychometrically valid scale to evaluate fear of activity in patients with coronary artery disease.
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