Clinical characteristics among patients with COVID‑19: A single‑center retrospective study.

The aim of the present study was to investigate the clinical features and laboratory parameters of hospitalized patients with coronavirus disease 2019 (COVID-19) and assess the characteristics between severe and non-severe cases. The study retrospectively analyzed the clinical data of 1,096 patients, of which, 626 (57.11%) and 470 (42.89%) were categorized into severe and non-severe groups, respectively. Clinical parameters such as signs and symptoms, comorbidities, levels of D-dimer, C-reactive protein (CRP), interleukin 6 (IL-6) and lactate dehydrogenase were analyzed. The data are presented as frequencies, means and standard deviations. The chi-square test and Mann-Whitney U test were used to assess any significant differences between the severe and non-severe COVID-19 groups. The clinical symptoms in severe COVID-19 cases included anosmia (P≤0.01), sore throat (P≤0.01), fatigue (P≤0.01), headache (P≤0.01), and shortness of breath (P≤0.01). Laboratory findings showed a significant increase in CRP (21.90±40.23 vs. 16.13±21.82; P≤0.01) and IL-6 levels (58.92±55.07 vs. 41.41±38.30; P≤0.01). Patients with severe COVID-19 had significant lymphopenia compared with that in non-severe cases. Among the comorbidities, hypertension (P≤0.01) was significantly more frequent in patients with severe COVID-19. In conclusion, major derangements in laboratory parameters were observed in patients with severe COVID-19 infection.