Clinical Manifestations

The Cognitive Domains and Functional Assessment Questionnaire (CDFAQ) assesses cognitive and functional decline based on the DSM-5 criteria for Neurocognitive Disorders. Its accuracy has been assessed, and it has been translated and adapted into English. The participant version (CDFAQ-PV) is a 30-item questionnaire that assesses six cognitive domains, based on the DSM-5, with five items each: Complex Attention (CA), Executive Functions (EF), Learning and Memory (LM), Language (L), Perceptual-Motor (PM) and Social Cognition (SC). Although the informant version (CDFAQ-IV) has already been assessed by factor analysis with convergence to the DSM-5 cognitive domains, this assessment hasn't been done yet for the participant version.

To perform a Confirmatory Factor Analysis of the CDFAQ-PV to assess the six-factor cognitive domain model.

Older adults and their informants were invited to participate in this study. The CDFAQ-PV was applied in 377 older adults. We used the JASP for a Confirmatory Factor Analysis based on Lavaan R Packages. The confirmatory factor analysis was run with a manual six-factor model. This study was approved by the ethics committee of UFMG.

Confirmatory factor analysis model fitness was significant with X2(p < .001), with standardized root mean square residual (SRMR) .065 (accepted < .08), and with the goodness of fit index (GFI) .983 (accepted > .9). However, the root mean square error of approximation (RMSEA) was over the accepted values .073 (accepted < .06), as well as the comparative fit index CFI that was .792 under the accepted cutoff (accepted > .9).

The six-factor model of the showed a good fit for three parameters, and negative for two. These results point to a convergence of the CDFAQ-PV and CDFAQ-IV, as well to the DSM-5 cognitive domains. These are still preliminary results and we aim to increase our sample to further assess the confirmatory factor analysis.