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  • Title: Use of the hospital anxiety and depression scale as a screening tool for patients with headache.
    Author: Juang KD, Wang SJ, Lin CH, Fuh JL.
    Journal: Zhonghua Yi Xue Za Zhi (Taipei); 1999 Nov; 62(11):749-55. PubMed ID: 10575802.
    Abstract:
    BACKGROUND: The Hospital Anxiety and Depression Scale (HADS) is becoming widely used in medical settings to screen for anxiety or depressive disorders. It has been shown to be a good screening instrument in different ethnic and disease populations. The objective of this study was to evaluate the validity and reliability of HADS in patients with headache at a headache clinic. METHODS: Consecutive new patients to a headache clinic at the Taipei Veterans General Hospital from September to December, 1998, were recruited in the study. The participants completed the HADS questionnaire and underwent a psychiatric semistructured interview according to the Diagnostic and Statistical Manual (4th revision). The reliability and validity of the HADS were evaluated with respect to headache. RESULTS: A total of 62 patients (21 men, 41 women) completed the study. The HADS had a good internal consistency when applied to patients suffering from headache, with a Cronbach's alpha coefficient of 0.84 and a split-half reliability of 0.84. Factor analysis in this sample revealed four factors: anxiety, depression, panic and somatic factors. A total of 48 patients (77%) had a psychiatric diagnosis. The frequency of depressive disorders was 57% and anxiety disorders 31%. A total HADS score of 10 or more was the optimal cut-off point for depressive disorders. The sensitivity was 85.7%, and the specificity 33.3%. A total score of at least 13 was the optimal cut-off point for anxiety disorder. The sensitivity was 84.2%, while the specificity was 41.9%. CONCLUSIONS: Depression and anxiety were quite common among patients with headache in a headache clinic. The HADS can be used as a screening instrument for depressive and anxiety disorders. Because of the low specificity, the HADS should not be used solely as an indicator of psychiatric comorbidity among patients with headache in a headache clinic. This is the first study that verifies the use of the HADS as a psychiatric screening tool in patients with headache by comparing the scores of the HADS with psychiatric diagnoses.
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