Abstract: Obesity Medicine 32 (2022) 100420 Contents lists available at ScienceDirect Obesity Medicine journal homepage: www.elsevier.com/locate/obmed Survival analysis based on body mass index in patients with Covid-19 admitted to the intensive care unit of Amir Al-Momenin Hospital in Arak – 2021 Morteza Zangeneh a, Touraj Valeh b, Amrollah Sharifi c, * a Clinical Development Research Center, Amir Al-Momenin Hospital, Arak University of Medical Science, Arak, Iran Endocrinology & Metabolism Research Center, Amir Al-Momenin Hospital, Arak University of Medical Science, Arak, Iran c Department of Nutrition, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran b A R T I C L E I N F O A B S T R A C T Keywords: COVID-19 Body mass index Survival Intensive care unit Introduction: The potential risk of obesity on the severity of COVID-19 has been proposed. The main purpose of this study was to investigate the effect of BMI on the survival rate of COVID-19 patients admitted to the ICU. Methods & materials: Patients with COVID-19 admitted to ICU were included. Gender, height, weight, BMI, age, underlying disease status, prescribed drugs and nutritional supplements, and clinical and laboratory parameters at the beginning of admission were recorded. Death or discharge from the ICU and the days elapsed to these events were also reviewed and recorded. Data analysis was performed using the Cox regression model. Results: assessing 193 patients showed that BMI was not related to the survival rate even after adjusting for other potential confounding variables. It was shown that arterial oxygen saturation and taking Famotidine were the significant factors determining the time to event in these patients. Conclusion: The BMI at the time of ICU admission has no effect on survival rate and time to event in COVID-19 infected patients admitted to ICU.