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International Journal of Mental Health and Addiction

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23.11.2020 | Original Article

Psychometric Evidence of the 7-Item Generalized Anxiety Disorder Questionnaire in Brazil

verfasst von: Renan P. Monteiro, Bruna S. Nascimento, Tatiana Medeiros Costa Monteiro, Phillip Dyamond Gomes da Silva, Ana Júlia Cândida Ferreira

Erschienen in: International Journal of Mental Health and Addiction | Ausgabe 2/2022

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Abstract

Generalized anxiety disorder (GAD) is one of the most prevalent and impairing psychological disorders. GAD is defined as a persistent and excessive worry associated with physical and psychological symptoms. Despite the potentially severe nature of GAD, it has been estimated that nearly half of patients live with the symptoms for about 2 years before being appropriately diagnosed and treated. To allow early identification of this disorder, valid and reliable measures for the screening of GAD are essential. Therefore, the present study aimed to gather psychometric evidence of the 7-Item Generalized Anxiety Disorder Questionnaire (GAD-7) in Brazil (N = 746). The findings suggested a stable one-factor structure (CFI = .99; TLI = .99; RMSEA = .05) that is likely to be replicated (H-Latent = .92; H-Observed = .86) and have excellent reliability (ω = .91; CR = .91). Furthermore, the GAD-7 correlated positively with the DASS-21 stress (r = .73), depression (r = .53), and anxiety (r = .60) factors, along with the Groningen Sleep Quality Scale (r = .45) and the personality trait of neuroticism (r = .49), supporting its convergent validity. Finally, the GAD-7 is able to differentiate between participants with mild, moderate, and severe level of anxiety. Taken together, the present findings indicate that the GAD-7 is a suitable psychometric measure to assess generalized anxiety disorder in Brazil.

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Titel: Psychometric Evidence of the 7-Item Generalized Anxiety Disorder Questionnaire in Brazil
verfasst von: Renan P. Monteiro
Bruna S. Nascimento
Tatiana Medeiros Costa Monteiro
Phillip Dyamond Gomes da Silva
Ana Júlia Cândida Ferreira
Publikationsdatum: 23.11.2020
Verlag: Springer US
Erschienen in: International Journal of Mental Health and Addiction / Ausgabe 2/2022
Print ISSN: 1557-1874
Elektronische ISSN: 1557-1882
DOI: https://doi.org/10.1007/s11469-020-00423-9

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