Evaluation of the psychometric characteristics of the Spanish version of the Hospital Anxiety and Depression Scale |
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Authors: | Quintana J M Padierna A Esteban C Arostegui I Bilbao A Ruiz I |
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Institution: | Unidad de Investigación, Hospital de Galdakao, Bizkaia, Spain. jmquinta@hgda.osakidetza.net |
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Abstract: | OBJECTIVE: To assess the psychometric properties of the Spanish version of the Hospital Anxiety and Depression Scale(HADS). METHOD: We administered HADS to 685 participants (256 controls and 429 patients with five different diagnoses). The reliability of the instrument was assessed by a test-retest study. Construct validity studies were carried out through item-subscale correlation and factor analysis for the whole group and by each of the five different diagnoses. Three instruments were used as external criteria to assess concurrent validity. RESULTS: HADS test-retest reliability presented correlation coefficients above 0.85. The internal consistency was high, with a Cronbach's alpha of 0.86 (anxiety) and 0.86 (depression). Factor analysis showed a clear two-factor structure for all groups. The results showed high concurrent validity with the Beck Depression Inventory and State-Trait Anxiety Inventory and with the mental domains of the Short-Form Health Survey. CONCLUSION: The Spanish version of the HADS demonstrated good reliability and validity when used in medical patients. |
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Keywords: | quality of life questionnaires psychometrics anxiety disorder depression disorder Spain |
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