Objective: Longitudinal measurement invariance analyses are an important way to assess a test’s ability to estimate the underlying construct over time, ensuring that cognitive scores across visits represent a similar underlying construct, and that changes in test performance are attributable to individual change in cognitive abilities. We aimed to evaluate longitudinal measurement invariance in a large, social and culturally diverse sample over time. Methods: A total of 5,949 participants from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) were included, whose cognition was reassessed after four years. Longitudinal measurement invariance analysis was performed by comparing a nested series of multiple-group confirmatory factor analysis models (for memory and executive function factors). Results: Configural, metric, scalar and strict invariance were tested and supported over time. Conclusion: Cognitive temporal changes in this sample are more likely to be due to normal and/or pathological aging. Testing longitudinal measurement invariance is essential for diverse samples at high risk of dementia, such as in low- and middle-income countries.
CITATION STYLE
Bertola, L., Benseñor, I. M., Gross, A. L., Caramelli, P., Barreto, S. M., Moreno, A. B., … Suemoto, C. K. (2021). Longitudinal measurement invariance of neuro-psychological tests in a diverse sample from the ELSA-Brasil study. Brazilian Journal of Psychiatry, 43(3), 254–261. https://doi.org/10.1590/1516-4446-2020-0978
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