Four of the independent variables (personal pathological history, obstetric pathological history, maternal stature <150 centimeters and smoking) showed a significant positive contribution, thus they can be considered as clear risk factors for low birth weight. The use of the logistic regression model in the Mayan municipality of José María Morelos, will allow estimating the probability of low birth weight for each pregnant woman in the future, which will be useful for the health authorities of the region.

These results should be taken into consideration when planning to avoid healthcare problems and food-borne diseases in the population that consumes this type of food in the city and port of Progreso de Castro, in Yucatán, Mexico.

Introduction. The marine environment occupies practically three–quarters of the earth's surface and in coastal areas it is directly or indirectly related to man. Objective. To determine if seafood represents potential risk factors for Vibrio parahaemolyticus species for the development of acute gastroenteritis, wound infection, ear infection and secondary septicemia. Material and methods. A list of establishments specialized in the sale of seafood for human consumption was obtained. The amount of seafood in these establishments was 196. Results. In 13 (3.33%) samples an equal number of strains were isolated whose biochemical characteristics corresponded to the species Vibrio parahaemolyticus. Conclusion. Raw seafood and partially heat–cooked seafood represents potential risk factors for Vibrio parahaemolyticus species for the development of acute gastroenteritis, wound infection, ear infection, and secondary septicemia.  

According to the World Health Organization, obesity is growing at an alarming rate, as it is now estimated that more than 250 million people are obese in the world, or 7% of the adult population. Obesity is defined as a generally chronic multifactorial pathological entity manifested by a condition of excess body fat associated with many chronic–degenerative conditions and disorders, mostly treatable. To compare the internal validity (sensitivity, specificity and safety) of the Body Mass Index versus the internal validity of the Waist/Hip Index versus the internal validity of the Abdominal Circumference as diagnostic methods of overweight and obesity in adults aged 18–64 years of either gender who attended the Integral Hospital "Jose Maria Morelos" in the Mayan municipality of Jose Maria Morelos, Quintana Roo, Mexico, during the period comprised from 1 August 2017 to 31 July 2018. The study design corresponds to that of a descriptive observational epidemiological study without directionality and with prospective temporality. A total of 300 observation units [119 (39.67%) of the male gender and 181 (60.33%) of the female gender] of 18–64 years of age were studied in the period from August 1, 2017 to July 31, 2018. Mantel–Haenszel Ji–Square statistic (x2M–H) was used as hypothesis test or statistical significance test. The software Epi lnfo for Windows, Version 7.1.5.2, was used to obtain the values of the statistic x2M–H and of the probabilities (p). According to Norma Oficial Mexicana NOM–174–SSA1–1998, 171 (57.00%) observation units with overweight and obesity were tagged and 129 (43.00%) observation units without overweight and obesity were tagged. The diagnostic test with the highest sensitivity (82.46%) was the Body Mass Index; the diagnostic test with the greatest specificity (58.14%) was the Waist/Hip Index; and the diagnostic test with the highest safety (70.67%) was also the Body Mass Index.

Objetivo. Determinar si dos índices antropométricos tienen o no eficiencia pronóstica suficiente o eficiencia pronóstica moderada combinando en una sola expresión la sensibilidad y la especificidad mediante las razones de verosimilitud positiva y negativa. Material y Métodos. Enfoque epistemológico cuantitativo. Estudio epidemiológico observacional descriptivo sin direccionalidad y con temporalidad prospectiva. Se estudiaron 300 pacientes adultos de ambos géneros que acudieron al "Hospital Integral José María Morelos". Como prueba de referencia, estándar de oro o Gold Standard fue utilizada la Ecuación de la Metropolitan Life Insurance Company. Resultados. Los resultados para las razones de verosimilitud positiva correspondieron a 13.4 y 1.6 para los índices antropométricos ICE y CA, respectivamente. Los resultados para las razones de verosimilitud negativa correspondieron, respectivamente, a 0.07 y 0.4 para los índices antropométricos ICE y CA. Conclusiones. Se concluye que el mejor índice antropométrico para el diagnóstico de las situaciones nutricionales patológicas sobrepeso y obesidad corresponde al Índice Cintura/Estatura, toda vez que los resultados de las razones de verosimilitud positiva y negativa reportan eficiencias pronósticas suficientes. Por otro lado, los resultados de las razones de verosimilitud positiva y negativa reportan, respectivamente, eficiencia pronóstica insignificante y eficiencia pronóstica escasa para la Circunferencia Abdominal.