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Verbal fluency tests reliability in a Brazilian multicentric study, ELSA-Brasil
Valéria Maria de Azeredo Passos1, Luana Giatti, Sandhi Maria Barreto
1Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. vpassos@medicina.ufmg.br
Arquivos De Neuro-Psiquiatria
|November 2, 2011
Summary
Verbal Fluency Tests (VFT) demonstrate high scoring consistency across research centers in the ELSA-Brasil study. This confirms the reliability and validity of VFT for assessing cognitive function in large-scale health research.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Epidemiology
Background:
- Verbal Fluency Tests (VFT) are crucial for evaluating executive functions and language.
- Assessing cognitive function and its decline is vital in longitudinal health studies like ELSA-Brasil.
Purpose of the Study:
- To evaluate the reliability of Verbal Fluency Test scoring conducted by supervisors across different ELSA research centers.
- To ensure the accuracy and consistency of VFT data for the ELSA-Brasil cohort study.
Main Methods:
- Supervisors independently scored 120 category and 120 phonemic VFTs.
- Scores were compared against a reference standard established by two expert judges.
- Intraclass correlation coefficients and Bland-Altman plots assessed inter-rater reliability and agreement.
Main Results:
- VFT scores showed high similarity among participating ELSA research centers.
- A strong agreement was found between individual center scores and the expert reference standard.
Conclusions:
- The consistent VFT scoring confirms the test's reliability and validity for multicenter research.
- This assures the quality of cognitive function data collected in the ELSA-Brasil study.
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