A Brief Measure for Assessing Generalized Anxiety Disorder: The GAD-7
TLDR
In this article, a 7-item anxiety scale (GAD-7) had good reliability, as well as criterion, construct, factorial, and procedural validity, and increasing scores on the scale were strongly associated with multiple domains of functional impairment.Abstract:
Background Generalized anxiety disorder (GAD) is one of the most common mental disorders; however, there is no brief clinical measure for assessing GAD. The objective of this study was to develop a brief self-report scale to identify probable cases of GAD and evaluate its reliability and validity. Methods A criterion-standard study was performed in 15 primary care clinics in the United States from November 2004 through June 2005. Of a total of 2740 adult patients completing a study questionnaire, 965 patients had a telephone interview with a mental health professional within 1 week. For criterion and construct validity, GAD self-report scale diagnoses were compared with independent diagnoses made by mental health professionals; functional status measures; disability days; and health care use. Results A 7-item anxiety scale (GAD-7) had good reliability, as well as criterion, construct, factorial, and procedural validity. A cut point was identified that optimized sensitivity (89%) and specificity (82%). Increasing scores on the scale were strongly associated with multiple domains of functional impairment (all 6 Medical Outcomes Study Short-Form General Health Survey scales and disability days). Although GAD and depression symptoms frequently co-occurred, factor analysis confirmed them as distinct dimensions. Moreover, GAD and depression symptoms had differing but independent effects on functional impairment and disability. There was good agreement between self-report and interviewer-administered versions of the scale. Conclusion The GAD-7 is a valid and efficient tool for screening for GAD and assessing its severity in clinical practice and research.read more
Citations
More filters
Journal ArticleDOI
Anxiety Disorders in Primary Care: Prevalence, Impairment, Comorbidity, and Detection
TL;DR: A large primary carebased anxiety study is analyzed to ascertain commonalities among anxiety diagnoses that are traditionally considered to be discrete and to determine whether a single measure can be used as a first step, common metric.
Journal ArticleDOI
The Patient Health Questionnaire Somatic, Anxiety, and Depressive Symptom Scales: a systematic review.
TL;DR: In this article, the psychometric and pragmatic characteristics of the Patient Health Questionnaire (PHQ)-9 depression, generalized anxiety disorder (GAD)-7 anxiety and PHQ-15 somatic symptom scales are synthesized from two sources: (1) four multisite cross-sectional studies (three conducted in primary care and one in obstetric-gynecology practices) comprising 9740 patients, and (2) key studies from the literature that have studied these scales.
Journal ArticleDOI
Validation and Standardization of the Generalized Anxiety Disorder Screener (GAD-7) in the General Population
Bernd Löwe,Oliver Decker,Stefanie Müller,Elmar Brähler,Dieter Schellberg,Wolfgang Herzog,Philipp Yorck Herzberg +6 more
TL;DR: Evidence supports reliability and validity of the G AD-7 as a measure of anxiety in the general population and can be used to compare a subject's GAD-7 score with those determined from a general population reference group.
Journal ArticleDOI
Generalized anxiety disorder, depressive symptoms and sleep quality during COVID-19 outbreak in China: a web-based cross-sectional survey.
Yeen Huang,Ning Zhao,Ning Zhao +2 more
TL;DR: This study identified a major mental health burden of the public during the COVID-19 outbreak as young people, people spending too much time thinking about the outbreak, and healthcare workers were at high risk of mental illness.
Journal ArticleDOI
An ultra-brief screening scale for anxiety and depression: the PHQ-4.
TL;DR: The PHQ-4 is a valid ultra-brief tool for detecting both anxiety and depressive disorders and has a substantial effect on functional status that was independent of depression.
References
More filters
Journal ArticleDOI
The MOS 36-item short-form health survey (SF-36). I. Conceptual framework and item selection.
John E. Ware,Cathy D. Sherbourne +1 more
TL;DR: A 36-item short-form survey designed for use in clinical practice and research, health policy evaluations, and general population surveys to survey health status in the Medical Outcomes Study is constructed.
Journal ArticleDOI
The PHQ-9: validity of a brief depression severity measure.
TL;DR: In addition to making criteria-based diagnoses of depressive disorders, the PHQ-9 is also a reliable and valid measure of depression severity, which makes it a useful clinical and research tool.
Journal ArticleDOI
An inventory for measuring clinical anxiety: psychometric properties.
TL;DR: Un nouvel inventaire auto-administre destine a mesurer l'anxiete pathologique, le «Beck Anxiety Cheklist» (BAI) est decrit, evalue et compare au «Hamilton Anxiety Rating Scale» (test avec lequel des correlations moderees sont trouvees).
Journal ArticleDOI
The validity of the Hospital Anxiety and Depression Scale: An updated literature review
TL;DR: HADS was found to perform well in assessing the symptom severity and caseness of anxiety disorders and depression in both somatic, psychiatric and primary care patients and in the general population.