<p>We analyzed data on 613 patients from August 2020 to January 2021. The prevalence of severe COVID-19 was 46.40% (95% confidence interval [CI]: 42.40-50.40). Patients with severe COVID-19 on admission had higher age groups, smoking and alcohol use, employment and education levels, diabetes mellitus and hypertension compared with those of non-severe cases (p &lt; 0.05). Logistic regression analyses indicated that increasing age (aOR, 1.03; 95% CI, 1.01–1.04) and alcohol use (aOR, 2.75; 95% CI, 1.21–6.27) were predictive factors for severe outcome.</p>