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CAMcog as a screening tool for diagnosis of mild cognitive impairment and dementia in a Brazilian clinical sample of moderate to high education.
Int J Geriatr Psychiatry 2008; 23(11):1127-33IJ

Abstract

BACKGROUND

The CAMCOG is a brief neuropsychological battery designed to assess global cognitive function and ascertain the impairments that are required for the diagnosis of dementia. To date, the cut-off scores for mild cognitive impairment (MCI) have not been determined. Given the need for an earlier diagnosis of mild dementia, new cut-off values are also necessary, taking into account cultural and educational effects.

METHODS

One hundred and fifty-seven older adults (mean age: 69.6 +/- 7.4 years) with 8 or more years of formal education (mean years of schooling 14.2 +/- 3.8) attending a memory clinic at the Institute of Psychiatry University of Sao Paulo were included. Subjects were divided into three groups according to their cognitive status, established through clinical and neuropsychological assessment: normal controls, n = 62; MCI, n = 65; and mild or moderate dementia, n = 30. ROC curve analyses were performed for dementia vs controls, MCI vs controls and MCI vs dementia.

RESULTS

The cut-off values were: 92/93 for dementia vs controls (AUC = 0.99: sensitivity: 100%, specificity: 95%); 95/96 for MCI vs controls (AUC = 0.83, sensitivity: 64%, specificity: 88%), and 85/86 for MCI vs dementia (AUC = 0.91, sensitivity: 81%, specificity: 88%). The total CAMCOG score was more accurate than its subtests Mini-mental State Examination, Verbal Fluency Test and Clock Drawing Test when used separately.

CONCLUSIONS

The CAMCOG discriminated controls and MCI from demented patients, but was less accurate to discriminate MCI from controls. The best cut-off value to differentiate controls and demented was higher than suggested in the original publication, probably because only cases of mild to moderate dementia were included. This is important given the need for a diagnostic at earlier stages of Alzheimer's disease.

Authors+Show Affiliations

Psychogeriatric Clinic and Laboratory of Neuroscience LIM-27, Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, Brazil. paula@formato.com.brNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Studies
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18464287

Citation

Nunes, Paula V., et al. "CAMcog as a Screening Tool for Diagnosis of Mild Cognitive Impairment and Dementia in a Brazilian Clinical Sample of Moderate to High Education." International Journal of Geriatric Psychiatry, vol. 23, no. 11, 2008, pp. 1127-33.
Nunes PV, Diniz BS, Radanovic M, et al. CAMcog as a screening tool for diagnosis of mild cognitive impairment and dementia in a Brazilian clinical sample of moderate to high education. Int J Geriatr Psychiatry. 2008;23(11):1127-33.
Nunes, P. V., Diniz, B. S., Radanovic, M., Abreu, I. D., Borelli, D. T., Yassuda, M. S., & Forlenza, O. V. (2008). CAMcog as a screening tool for diagnosis of mild cognitive impairment and dementia in a Brazilian clinical sample of moderate to high education. International Journal of Geriatric Psychiatry, 23(11), pp. 1127-33. doi:10.1002/gps.2038.
Nunes PV, et al. CAMcog as a Screening Tool for Diagnosis of Mild Cognitive Impairment and Dementia in a Brazilian Clinical Sample of Moderate to High Education. Int J Geriatr Psychiatry. 2008;23(11):1127-33. PubMed PMID: 18464287.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - CAMcog as a screening tool for diagnosis of mild cognitive impairment and dementia in a Brazilian clinical sample of moderate to high education. AU - Nunes,Paula V, AU - Diniz,Breno S, AU - Radanovic,Marcia, AU - Abreu,Izabella D, AU - Borelli,Danilo T, AU - Yassuda,Monica S, AU - Forlenza,Orestes V, PY - 2008/5/9/pubmed PY - 2009/5/22/medline PY - 2008/5/9/entrez SP - 1127 EP - 33 JF - International journal of geriatric psychiatry JO - Int J Geriatr Psychiatry VL - 23 IS - 11 N2 - BACKGROUND: The CAMCOG is a brief neuropsychological battery designed to assess global cognitive function and ascertain the impairments that are required for the diagnosis of dementia. To date, the cut-off scores for mild cognitive impairment (MCI) have not been determined. Given the need for an earlier diagnosis of mild dementia, new cut-off values are also necessary, taking into account cultural and educational effects. METHODS: One hundred and fifty-seven older adults (mean age: 69.6 +/- 7.4 years) with 8 or more years of formal education (mean years of schooling 14.2 +/- 3.8) attending a memory clinic at the Institute of Psychiatry University of Sao Paulo were included. Subjects were divided into three groups according to their cognitive status, established through clinical and neuropsychological assessment: normal controls, n = 62; MCI, n = 65; and mild or moderate dementia, n = 30. ROC curve analyses were performed for dementia vs controls, MCI vs controls and MCI vs dementia. RESULTS: The cut-off values were: 92/93 for dementia vs controls (AUC = 0.99: sensitivity: 100%, specificity: 95%); 95/96 for MCI vs controls (AUC = 0.83, sensitivity: 64%, specificity: 88%), and 85/86 for MCI vs dementia (AUC = 0.91, sensitivity: 81%, specificity: 88%). The total CAMCOG score was more accurate than its subtests Mini-mental State Examination, Verbal Fluency Test and Clock Drawing Test when used separately. CONCLUSIONS: The CAMCOG discriminated controls and MCI from demented patients, but was less accurate to discriminate MCI from controls. The best cut-off value to differentiate controls and demented was higher than suggested in the original publication, probably because only cases of mild to moderate dementia were included. This is important given the need for a diagnostic at earlier stages of Alzheimer's disease. SN - 1099-1166 UR - https://www.unboundmedicine.com/medline/citation/18464287/CAMcog_as_a_screening_tool_for_diagnosis_of_mild_cognitive_impairment_and_dementia_in_a_Brazilian_clinical_sample_of_moderate_to_high_education_ L2 - https://doi.org/10.1002/gps.2038 DB - PRIME DP - Unbound Medicine ER -