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Copyright of Revista Medica del IMSS is the property of Direccion de Prestaciones Medicas - IMSS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: The main risk factors studied that have an influence on mortality from COVID-19 have so far been inconclusive in the world literature, mainly in relation to the male gender., Objective: To determine which are the main risk factors that influence a higher mortality from COVID-19., Material and Methods: A case-control study was conducted, including 1190 patients with positive RT-PCR. The risk factors studied were: gender, age, systemic arterial hypertension (SAH), Diabetes mellitus (DM), obesity, Chronic Obstructive Pulmonary Disease (COPD), asthma, smoking, immunosuppressants, Human Immunodeficiency Virus (HIV), influenza vaccine. In the Group of Cases: they died from COVID-19 (n = 576), while in the Controls group: they survived (n = 614). The statistical plan included cross-tables and multivariate logistic regression model to determine the influence of these risk factors on mortality from COVID-19., Results: We found no statistically significant differences between cases and controls in relation to gender. However, the cases were aged >60 years, SAH, DM, obesity compared to controls., Conclusions: Male gender was not a risk factor for mortality from COVID-19, however, other risk factors such as age over 60 years, being hypertensive, diabetic and obese, were corroborated as such for a higher mortality from COVID-19., (© 2022 Revista Medica del Instituto Mexicano del Seguro Social.)

Background: Adolescence is a stage of growth with changes whose result is adulthood. Obesity increases the risk of chronic diseases; therefore, it is important to identify modifiable risk factors to prevent obesity in adolescents., Objective: To iIdentify modifiable risk factors for obesity in adolescents from a Family Medicine Unit in the city of Puebla., Material and Methods: Case-control study. The Graffar scale, the World Health Organization percentile tables, the Krece Plus test and the Short Diet Quality Screener (sDQS) were applied. Chi squared, odds ratios (OR) with 95% confidence intervals (95% CI), and Pearson's phi with Cramer's V were used., Results: 348 adolescents participated, divided into 2 groups. In the group of adolescents with obesity, exclusive breastfeeding was present in 44.8%, 60.9% had at least one obese parent, 66.7% had an inadequate diet, and 63.8% had a bad lifestyle. On the other hand, the group of adolescents without obesity presented exclusive breastfeeding in 88.5%, 75.3% did not have parents with obesity, 66.1% presented an adequate diet in some aspects and 52.3% had a fair to good lifestyle., Conclusion: The absence of exclusive breastfeeding in the first 6 months of life, parental obesity, poor physical activity, and inadequate diets were associated with the presence of obesity in adolescents., (© 2022 Revista Medica del Instituto Mexicano del Seguro Social.)