[Adaptation to the Mexican population of the "Questionnaire of habits related to overweight and obesity"]. / Adaptación a la población mexicana del "Cuestionario de hábitos relacionados con el sobrepeso y la obesidad".

INTRODUCTION: the "Questionnaire of habits related to overweight and obesity" was created and validated in Spanish population, and it allows to describe and quantify five dimensions related to overweight and obesity: diet caloric content, eating for psychological well-being, physical exercise, healthy eating, and alcohol consumption. OBJECTIVE: to adapt the questionnaire in Mexican population, assess their psychometric properties, and compare them with those of the Spanish version. METHOD: the original questionnaire was administered to a sample of 493 Mexican patients with overweight or obesity, and different statistical tools have been applied (exploratory and confirmatory factor analysis, reliability analysis) to know the psychometric properties of the Mexican version and its degree of similarity to the original version. RESULTS: the questionnaire adapted to the Mexican population exhibits the same dimensions as those obtained in the Spanish population (caloric content of the diet, eating for psychological well-being, physical exercise, alcohol consumption and healthy eating), and their psychometric properties are very similar to those obtained for the original questionnaire. CONCLUSION: as a consequence of the adaptation process, a questionnaire with good psychometric properties suitable to measure the lifestyle habits related to overweight and obesity is now available.

Introducción: el "Cuestionario de hábitos relacionados con el sobrepeso y la obesidad" es un cuestionario creado y validado para la población española que permite describir y cuantificar varias dimensiones relacionadas con el sobrepeso y la obesidad: contenido calórico de la dieta, comer por bienestar psicológico, ejercicio físico, alimentación saludable y consumo de alcohol.Objetivo: adaptar el cuestionario a la población mexicana, analizar sus propiedades psicométricas y compararlas con las de la versión española.Método: se ha administrado el cuestionario original a una muestra de 493 pacientes mexicanos con sobrepeso u obesidad y se han aplicado diferentes herramientas estadísticas (análisis factorial exploratorio y confirmatorio, análisis de fiabilidad) para conocer las propiedades psicométricas de la versión mexicana y su grado de parecido con la versión original.Resultados: las dimensiones del cuestionario adaptado a la población mexicana son las mismas que las obtenidas en la población española y sus propiedades psicométricas son muy parecidas a las del cuestionario original.Conclusión: como consecuencia del proceso de adaptación, disponemos de un cuestionario con buenas propiedades psicométricas apropiado para medir los hábitos de vida relacionados con el sobrepeso y la obesidad.

Characterization of mtDNA haplogroups in 14 Mexican indigenous populations.

In this descriptive study we investigated the genetic structure of 513 Mexican indigenous subjects grouped in 14 populations (Mixteca-Alta, Mixteca-Baja, Otomi, Purépecha, Tzeltal, Tarahumara, Huichol, Nahua-Atocpan, Nahua-Xochimilco, Nahua-Zitlala, Nahua-Chilacachapa, Nahua-Ixhuatlancillo, Nahua-Necoxtla, and Nahua-Coyolillo) based on mtDNA haplogroups. These communities are geographically and culturally isolated; parents and grandparents were born in the community. Our data show that 98.6% of the mtDNA was distributed in haplogroups A1, A2, B1, B2, C1, C2, D1, and D2. Haplotype X6 was present in the Tarahumara (1/53) and Huichol (3/15), and haplotype L was present in the Nahua-Coyolillo (3/38). The first two principal components accounted for 95.9% of the total variation in the sample. The mtDNA haplogroup frequencies in the Purépecha and Zitlala were intermediate to cluster 1 (Otomi, Nahua-Ixhuatlancillo, Nahua-Xochimilco, Mixteca-Baja, and Tzeltal) and cluster 2 (Nahua-Necoxtla, Nahua-Atocpan, and Nahua-Chilacachapa). The Huichol, Tarahumara, Mixteca-Alta, and Nahua-Coyolillo were separated from the rest of the populations. According to these findings, the distribution of mtDNA haplogroups found in Mexican indigenous groups is similar to other Amerindian haplogroups, except for the African haplogroup found in one population.