COVID-19 and smoking: Worst complications and outcomes
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Tobacco Prevention and Control Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Publication date: 2022-07-05
Tob. Prev. Cessation 2022;8(Supplement):A91
Few studies have shown that smokers are more likely than nonsmokers to contract COVID-19, while some reports indicate that smokers are underrepresented among those requiring hospital treatment for this illness.

This study was designed and implemented to investigate the severity and outcomes of COVID-19, based on underlying smoking status.

This was a cross-sectional study that was implemented in Tehran and Ahvaz, with all COVID-19 hospitalized patients, from February to June 2021. A total of 18200 patients with a positive PCR test were observed. A check list of demographic data and smoking history was completed and analyzed.

In all, 11112 (61.1%) patients were male and the mean age was 47.9±11.3 years; 1508 smokers (8.3%) were seen with any type of tobacco consumption. The frequency of ICU admission in the smokers was significantly higher than non-smokers (23.9% vs 18.8%). Use of more than 3 medications in the smokers was significantly higher (70.6% vs 52%). A comparison between patients based on smoking indicates that the death rate was significantly higher in smokers (31.6% vs 25.6%).

Smokers with COVID-19 had more severe and worse outcomes.

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