Post-traumatic Stress Disorder and Resilience in Medical Students: A Multicenter Study from 13 Latin American Countries

Valladares-Garrido M.J.; Zila-Velasque J.P.; Zeta Solis L.A.; Astudillo Rueda D.; Acosta-Porzoliz R.; Chiguala C.I.P.; Jiménez-Mozo F.; Valdiviezo-Morales C.G.; Benavides Alburqueque E.S.; Porras Núñez E.C.; Dominguez-Troncos H.; Vera-Ponce V.J.; Valladares-Garrido D.; Pereira-Victorio C.J.; Culquichicón C.; Rivera-Lozada O.; Diaz-Velez C. · Chronic Stress (2026) · DOI: 10.1177/24705470261430113

Resumen

Background: Despite efforts in the literature to address posttraumatic stress disorder (PTSD) linked to COVID-19, there is a knowledge gap in understanding the specific role of resilience as a potential mitigator in this scenario, particularly in the setting of future medical professionals. Methods: We conducted a cross-sectional, multicenter study among medical students from 13 Latin American countries between June and September 2020, using a non-probabilistic convenience sampling strategy. PTSD symptoms, resilience, sleep quality, insomnia, burnout syndrome, physical activity, and socioeducational variables were assessed using validated instruments. Associations between PTSD and resilience, as well as other covariates, were evaluated using generalized linear models with Poisson distribution and robust variance, reporting prevalence ratios (PR) and 95% confidence intervals (95% CI). A total of 2019 medical students were included in the analysis. Results: The prevalence of PTSD was 12.3% (95%CI: 10.88-13.79) and 37.5% had high resilience (95%CI: 35.38-39.65). Students with high levels of resilience had a 37% lower prevalence of PTSD compared with students with low resilience (PR: 0.63). Conclusions: Higher levels of resilience were associated with a lower prevalence of PTSD symptoms among medical students. These findings underscore the substantial psychological impact of the COVID-19 pandemic on this population and support the implementation of institutional resilience-building and mental health support strategies, integrated into medical education, as a preventive approach to mitigate the mental health consequences of future epidemics and health-related disasters. © The Author(s) 2026. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

Instituciones: Universidad Peruana Cayetano Heredia; Universidad Nacional Daniel Alcides Carrión; Universidad Científica del Sur; Universidad Privada Antenor Orrego; Universidad Nacional de Piura; Universidad Continental; Universidad Nacional Federico Villarreal; Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas; Universidad César Vallejo; Universidad Señor de Sipán