Abstract
Background and Purpose: In this study, we investigate the longitudinal measurement invariance of the Chinese version of the mini-mental state examination (CMMSE). Methods: The factor structure and longitudinal equivalence of the CMMSE were examined by confirmatory factor analysis. Four CMMSE measurements of 13,132 participants from the China Longitudinal Health and Longevity Study between 2008 and 2018 were included. The nested model of longitudinal invariance proves the existence of strict longitudinal invariance. Results: It showed that the factor structure, factor loadings, intercept error variance, and latent factor means of the CMMSE were invariant across four measurements. Conclusion: These findings indicate that the changes in CMMSE scores can be attributed to real structural change, indicating that the CMMSE is a reliable measurement tool for the study of cognitive aging.
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