Objetivos. Adaptación peruana del test de la moneda en el tamizaje de trastorno cognitivo en adultos mayores (> 60 años). Materiales y métodos. El presente es un estudio de fase I de evaluación de prueba diagnóstica con muestreo de conveniencia y calculo de sensibilidad y especificidad, con una prevalencia pretest de 50%. Para la definición operacional de pacientes con trastorno cognitivo se utilizó los criterios de la DSM IV (The Diagnostic and Statistical Manual of Mental Disorders) y el Global Deterioration Scale (GDS) (controles: GDS 1 y 2; casos: mayor de 2). Para encontrar el punto de corte se utilizó la curva ROC (Receiver Operating Characteristic). Resultados. Los pacientes estudiados fueron 42 casos y 42 controles, no hubo diferencia significativa entre la edad (77,88 + 6,01 y 76,14 + 6,49 años) y años de educación (13,69 + 3,70 y 8,17 + 4,71). La versión peruana del "eurotest" denominada "prueba de la moneda peruana" tiene una sensibilidad de 90,5% y especificidad de 83,3 % con punto de corte de 24. Conclusiones. La versión peruana adaptada del "eurotest", denominada "prueba de la moneda peruana" podría ser útil en el tamizaje de trastorno cognitivo de adultos mayores.
Background:Studies have suggested that the Angiotensin-Converting Enzyme (ACE) gene insertion(I)/deletion(D) polymorphism may be associated with human longevity, especially in centenarians. However, it is controversial. Besides, there have been no studies in Peruvians Aim: To describe the age distribution of the ACE polymorphism in a convenience sample of Peruvian older people.
Subjects and methods:Cross-sectional study in 104 Geriatric Day Hospital patients in Lima, Perú. The ACE polymorphism was determined in all patients. For the age association, the sample was divided into four categories: young (<65), youngest-old (65-74), middle-old (75-84) and oldest-old (85 or more). Association analyses were based on the Chi-square statistic.
Results:The analysis of the distribution of genotype frequencies was consistent with a population in Hardy-Weinberg equilibrium (p=0.62). The number (%) of D/D, I/D and I/I genotypes in the young was 2 (14.3%), 3 (21.4%) and 9 (64.3%), respectively; in youngest-old: 4 (11.4%), 15 (42.9%) and 16 (45.7%); in middle-old: 6 (12.2%), 20 (40.8%) and 23 (46.9%); in oldest-old: 0 (0.0%), 4 (66.7%) and 2 (33.3%). Chi-square analysis showed no significant genotype distribution differences among age groups (p=0.647).
Conclusion:We found no significant age differences in the distribution of the ACE polymorphism in our sample. We recommend further studies with greater statistical power.
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