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      Mini-Cog versus Codex (cognitive disorders examination) Is there a difference? Translated title: Mini-Cog versus Codex (exame de distúrbios cognitivos): existe alguma diferença?

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          Abstract.

          Mini-Cog and Codex (cognitive disorders examination) are brief cognitive screening tests incorporating word-recall and clock drawing tests.

          Objective:

          To assess and compare the screening accuracy of Mini-Cog and Codex for diagnosis of dementia and mild cognitive impairment (MCI) in patients attending a dedicated cognitive disorders clinic.

          Methods:

          Tests were administered to a consecutive cohort of 162 patients, whose reference standard diagnoses based on clinical diagnostic criteria were dementia (44), MCI (26), and subjective memory complaint (92).

          Results:

          Both Mini-Cog and Codex had high sensitivity (>0.8) for dementia diagnosis, but Codex was more specific. For diagnosis of MCI, Mini-Cog had better sensitivity than Codex. Weighted comparisons of Mini-Cog and Codex showed only marginal net benefit for Mini-Cog for dementia diagnosis but larger net benefit for MCI diagnosis.

          Conclusion:

          In this pragmatic study both Mini-Cog and Codex were accurate brief screening tests for dementia but Mini-Cog was better for identification of MCI.

          Resumo.

          Mini-Cog e Codex são testes breves de triagem cognitiva incorporando testes de recuperação de palavras e desenho de relógio.

          Objetivo:

          Avaliar e comparar a precisão da triagem de Mini-Cog e Codex (exame de distúrbios cognitivos) para o diagnóstico de demência e comprometimento cognitivo leve (CCL) em pacientes atendidos em uma clínica dedicada a distúrbios cognitivos.

          Métodos:

          Os testes foram administrados a uma coorte consecutiva de 162 pacientes, cujos diagnósticos padrão de referência com base em critérios clínicos de diagnóstico foram demência (44), CCL (26) e queixa subjetiva de memória (92).

          Resultados:

          O Mini-Cog e o Codex apresentaram alta sensibilidade (>0,8) para o diagnóstico de demência, mas o Codex foi mais específico. Para o diagnóstico de CCL, o Mini-Cog teve melhor sensibilidade que o Codex. As comparações ponderadas de Mini-Cog e Codex mostraram apenas um benefício líquido marginal para o Mini-Cog para o diagnóstico de demência, mas um benefício líquido maior para o diagnóstico de CCL.

          Conclusão:

          Neste estudo pragmático, o Mini-Cog e o Codex foram testes breves de triagem precisos para demência, mas o Mini-Cog foi melhor para a identificação de CCL.

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          Most cited references22

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          Sensitivity × PPV is a recognized test called the clinical utility index (CUI+).

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            The Rapid Cognitive Screen (RCS): A Point-of-Care Screening for Dementia and Mild Cognitive Impairment.

            There is a need for a rapid screening test for mild cognitive impairment (MCI) and dementia to be used by primary care physicians. The Rapid Cognitive Screen (RCS) is a brief screening tool (< 3 min) for cognitive dysfunction. RCS includes 3-items from the Veterans Affairs Saint Louis University Mental Status (SLUMS) exam: recall, clock drawing, and insight. Study objectives were to: 1) examine the RCS sensitivity and specificity for MCI and dementia, 2) evaluate the RCS predictive validity for nursing home placement and mortality, and 3) compare the RCS to the clock drawing test (CDT) plus recall.
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              Abstracts of the Association of British Neurologists (ABN) joint meeting with the Royal College of Physicians (RCP), 23–24 October 2013, London, England.

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                Author and article information

                Journal
                Dement Neuropsychol
                Dement Neuropsychol
                dn
                Dementia & Neuropsychologia
                Associação de Neurologia Cognitiva e do Comportamento
                1980-5764
                1980-5764
                Apr-Jun 2020
                Apr-Jun 2020
                : 14
                : 2
                : 128-133
                Affiliations
                [1 ]Consultant Neurologist. Cognitive Function Clinic, Walton Centre for Neurology and Neurosurgery, Liverpool, United Kingdom.
                Author notes
                Andrew J. Larner. Cognitive Function Clinic, Walton Centre for Neurology and Neurosurgery, Lower Lane, Fazakerley, Liverpool, L9 7LJ, United Kingdom. E-mail: a.larner@ 123456thewaltoncentre.nhs.uk

                Disclosure: The authors report no conflicts of interest.

                Author information
                http://orcid.org/0000-0003-0128-8010
                Article
                10.1590/1980-57642020dn14-020005
                7304279
                3830e4d1-ed78-41fa-ba0e-cc92362f6775

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 08 August 2019
                : 06 March 2020
                Categories
                Original Article

                codex,dementia,mini-cog,mild cognitive impairment,sensitivity and specificity,demência,comprometimento cognitivo leve,sensibilidade e especificidade

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