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  • Titill er á ensku Can GAD-7 be used reliably to capture anxiety? Approaching evaluation of item quality using IRT
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  • Útdráttur er á ensku

    Anxiety disorders are one of the most prevalent mental disorders in western society. The health care system takes care of individuals with anxiety at many levels, and sometimes by health care professionals that are not specialized in mental health. Screening tools play an important role in the treatment of individuals with anxiety. They are used both to identify and monitor symptoms of the disorder, then in research they are often used to measure efficacy of treatment. It is therefore very important that they are reliable. The most prominent screening tool for anxiety today is the GAD-7. The aim of the current study was to evaluate the GAD-7, using methods of IRT, on a clinical sample of mental health patients. The sample consisted of 226 individuals that had sought help for anxiety and/or depression symptoms. Results indicted four main issues with the scale for the clinical population, 1) reliability was contingent on anxiety level, 2) items 5, 6 & 7 contribute minimal information to the total measure, 3) the summation score is not intuitive and 4) the response categories are flawed. It is concluded, that for further use, the scale needs some revisions.

  • 11.6.2019

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