BMC psychology · 2024
A contribution to the French validation of the clinical anxiety scale amongst health care workers in Switzerland.
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Apostolova Yana, Stamm Elisabeth, Cilla Francesco, Durst Anne-Véronique, Büla Christophe, D'Amelio Patrizia
Аннотация
BACKGROUND: Anxiety disorders are frequent but remain often underdiagnosed and undertreated. Hence, valid screening instruments are needed to enhance the diagnostic process. The Clinical Anxiety Scale (CAS) is a 25-item anxiety screening tool derived from the Hamilton Anxiety Scale (HAM-A). However, this scale is not available in French. The General anxiety disorder - 7 (GAD-7) scale, which has been validated in French, is a 7-item instrument with good psychometric properties. This study contributes to the validation of an adapted French version of the CAS, using the GAD-7 as the reference.
METHODS: A forward-backward English-French-English translation of the CAS was performed according to standard practice. The French versions of the CAS and GAD-7 were completed by 127 French speaking healthcare professionals. CAS internal consistency was assessed using Crohnbach's alpha, and test-retest reliability was tested after 15 days in a subsample of 30 subjects. Convergent validity with GAD-7 was assessed using Pearson's correlation coefficient. Test-retest reliability was explored using one-way random effects model to calculate the intra-class correlation coefficient (ICC).
RESULTS: French CAS showed excellent internal consistency (Cronbach's alpha 0.97), high convergent validity with GAD-7 (Pearson's R 0.81, p < 0.001), and very good test-retest reliability (ICC = 0.97, 95% CI 0.93-0.98).
CONCLUSION: The proposed French version of the CAS showed high reliability and validity that need to be further investigated in different populations.
METHODS: A forward-backward English-French-English translation of the CAS was performed according to standard practice. The French versions of the CAS and GAD-7 were completed by 127 French speaking healthcare professionals. CAS internal consistency was assessed using Crohnbach's alpha, and test-retest reliability was tested after 15 days in a subsample of 30 subjects. Convergent validity with GAD-7 was assessed using Pearson's correlation coefficient. Test-retest reliability was explored using one-way random effects model to calculate the intra-class correlation coefficient (ICC).
RESULTS: French CAS showed excellent internal consistency (Cronbach's alpha 0.97), high convergent validity with GAD-7 (Pearson's R 0.81, p < 0.001), and very good test-retest reliability (ICC = 0.97, 95% CI 0.93-0.98).
CONCLUSION: The proposed French version of the CAS showed high reliability and validity that need to be further investigated in different populations.