GAD-7 Validation: Anxiety Screening Data for Brazilian Adolescents

A psychometric validation study of the Generalized Anxiety Disorder scale (GAD-7) involving 302 Brazilian adolescents aged 15 to 19. The dataset likely contains survey responses from the GAD-7, Hospital Anxiety and Depression Scale (HADS), and Patient Health Questionnaire (PHQ-9). The study was authored by Michelle de Farias Leite and concluded the GAD-7 has adequate properties for screening anxiety in this population.

Use Cases

• Validating the psychometric properties of the GAD-7 scale based on the reported factor analysis and internal consistency.
• Analyzing the social distribution of anxiety symptoms based on demographic variables like age and gender mentioned in the description.
• Investigating concurrent validity between anxiety and depression scales based on the reported associations between GAD-7, PHQ-9, and HADS-A.
• Benchmarking anxiety screening tools for adolescent populations in Brazil.

Strengths

• Includes data from 302 participants, providing a substantive sample for analysis.
• Validation involved multiple established instruments (GAD-7, HADS, PHQ-9) for concurrent validity assessment.
• The study reports satisfactory internal consistency and unidimensionality for the GAD-7 scale.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count for the raw data is unknown, which may limit suitability assessment.
• Data may reflect geographic and age-range bias inherent to the specific sample of Brazilian adolescents.

Provenance

Source

Michelle de Farias Leite

Collection Method

Survey administration of sociodemographic questionnaire, GAD-7, HADS, and PHQ-9 to participants.

Geography

Brazil