The MoCA-S1-2 showed significantly greater discriminant validity than the MMSE for differentiating aMCI from dementia. The level of education had a great impact on scores: as a result, 2 points were added for patients with less than 8 years of schooling and one point for patients with 8-12 years of schooling (MoCA-S1-2). The optimal cut-off points for aMCI and mild dementia were<21 and<20, respectively, with sensitivity and specificity rates of 75% and 82% for aMCI and 90% and 86% for mild dementia. The MoCA-S was found to be an effective and valid test for detecting aMCI (AUC☐.903) and mild dementia (AUC☐.957) its effectiveness for detecting naMCI was lower (AUC☐.629).
The MoCA-S displayed good internal consistency (Cronbach's α: 0.772), high inter-rater reliability (Spearman correlation coefficient: 0.846 P<.01), and high intra-rater reliability (test-retest reliability coefficient: 0.922 P<.001). Mean age and years of schooling were 73☖ and 11±4 years, respectively, with no significant intergroup differences. Participants were evaluated with both the MoCA-S and the Mini-Mental State Examination (MMSE) to determine the discriminant validity of the MoCA-S. To evaluate the psychometric properties and discriminant validity of the MoCA-S in elderly patients in Santiago de Chile.ġ72 individuals were grouped according to their clinical diagnosis based on the Clinical Dementia Rating (CDR) scale as follows: amnestic mild cognitive impairment (aMCI n☒4), non-amnestic MCI (naMCI n☒4), mild dementia (n☒0), and cognitively normal (n☑04). Few studies have validated the Spanish-language version of the Montreal Cognitive Assessment (MoCA-S) test in Latin American populations.