National Research Institute of Tuberculosis and Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran TANAFFOS (Respiration) 1735-0344 24 2 2025 04 01 Smoking Rates and Disease Severity in COVID-19 Patients at Masih Deneshvari Hospital 194 197 734852 EN Zahra Hessami Tobacco Prevention and Control Research Center (TPCRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran Maryam Vasheghani Chronic Respiratory Diseases Research Center (CRDRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran Hooman Sharifi Tobacco Prevention and Control Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences ,Tehran, Iran 0000-0001-6448-046X Mahshid Aryanpur Tobacco Prevention and Control Research Center (TPCRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran Hakimeh Sheikhzade Clinical Tuberculosis and Epidemiology Research Center, NRITLD, Shahid Beheshti University of Medical Sciences, Tehran, Iran Journal Article 2024 11 18 Background: Considering that smoking is a major risk factor for respiratory diseases and viral infections, in this study, we investigated the smoking status in patients admitted with the diagnosis of COVID-19 at Masih Daneshvari Hospital. Materials and Methods: The information was obtained through the registration of patients' information in the hospital. Results: A total of 776 patients with COVID-19 who were admitted to Masih Daneshvari Hospital from April 2019 to June 2020 were examined, among whom 422 were men (54.4%), and 352 were women (45.5%). The mean age of the studied patients was 55.7 with a standard deviation of 15.9. The mean duration of hospitalization was 10.3 days with a standard deviation of 6.7 days. 178 (23.4%) patients were smokers. 45 smokers (25.3%) were hospitalized for more than 3 weeks, while 35 (6%) non-smokers were hospitalized for more than 3 weeks (p<0.05). There was no significant difference between smokers and non-smokers in terms of hospitalization in the intensive care unit and mortality. Conclusion: The significant finding is the high prevalence of smoking in the patient population, which should be taken into consideration. The higher length of hospitalization in smokers is also a notable finding that can cause problems for the health system and patients. Encouragement to quit smoking should be considered in health programs.

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