Resumen de Clinical and Demographic Predictors of Conversion to Dementia in Mexican Elderly with Mild Cognitive Impairment
Sara Gloria Aguilar Navarro, Alberto José Mimenza Alvarado, José Alberto Avila Funes, Teresa Juárez Cedillo, Carolina Bernal López, Celia G. Hernández Favela
Background: Mild cognitive impairment (MCI) is considered a clinical stage between normal cognitive aging and dementia. The clinical course of MCI is heterogeneous, with a significant number of cases progressing to dementia or reverting back to normal.
Objective: To determine the predictors of conversion from mild cognitive impairment to dementia among Mexican older adults.
Materials and Methods: A sample of 175 persons underwent clinical and neuropsychological evaluation to establish mild cognitive impairment diagnosis. These patients were followed-up for a mean 3.5 years. Results: Mean age was 81.7 (± 6.9) years, 57% were women, and mean education level was 9.5 (± 6.1) years. Sixty-one percent of mild cognitive impairment participants progressed to dementia. Multivariate Cox regression analysis showed that progression to dementia was associated with age (HR: 4.95; 95% CI: 1.96-12.46; p = 0.001), low education level (HR: 5.81; 95% CI: 1.90-7.78; p < 0.002), history of stroke (HR: 3.92;
95% CI: 1.37-11.16; p < 0.012) and cognitive decline (HR: 1.31; 95% CI: 1.18-1.45; p = 0.000). Conclusions: Age, poor education, cognitive decline, and a history of stroke were predictors of conversion to dementia. The identification and control of modifiable risk factors could influence conversion to dementia. (Rev Inves ClIn. 2017;69:33-9)
