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Gad 7 reliability and validity1/13/2024 ![]() We found an excellent Cronbach's alpha internal consistency score (0.880) and the test-retest and interclass correlation coefficients were also very good. GAD-7 was considered feasible with a mean completion time of 2.3 minutes and no major floor or ceiling effects. STAI was mainly used as a screening indicator for patient inclusion. Criterion validity was assessed by comparing GAD-7 scores with those obtained by HADS, and EQ-5D. Its unidimensionality was tested by principal component factor analysis. ![]() Construct validity was assessed by the relationship between GAD-7 and socio-demographic and clinical variables. Once piloted, this version was then tested in a larger sample for feasibility and reliability (1-week test-retest). The objective of this study was to culturally adapt and validate the GAD-7 for the Portuguese patients with generalized anxiety disorder.įor the cultural adaptation of the Portuguese version of the GAD-7 scale we started with a previous translation made by Mapi Institute and decided to perform a clinical review followed by a cognitive debriefing with patients. For this reason, it seems relevant to develop strategies allowing early diagnoses in order to promote appropriate treatments. Generalized anxiety disorder has a strong impact on health-related quality of life.
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