Table 1.
Comparison of patients with COVID-19 during the Omicron wave (January 2022) and the previous wave (July 2021).
| Previous wave (N = 87) | Omicron wave (N = 231) | P-value | |
|---|---|---|---|
| Age (years), median (range) | 41 (18–84) | 44 (15–99) | 0.124 |
| Age ≥65 years | 6 (6.9%) | 49 (21.2%) | 0.002 |
| Male, n (%) | 58 (66.7%) | 116 (50.2%) | 0.011 |
| Smoking habit | 37 (42.5%) | 76 (32.9%) | 0.117 |
| Comorbidity | |||
| Diabetes | 6 (6.9%) | 20 (8.7%) | 0.819 |
| Hypertension | 5 (5.7%) | 49 (21.2%) | <0.001 |
| Chronic lung disease | 1 (1.1%) | 25 (10.8%) | 0.003 |
| Obesity (BMI >30 kg/m2) | 8 (9.2%) | 26 (11.3%) | 0.687 |
| Days from onset to hospital visit, median (range) | 5 (1–9) | 4 (1–17) | 0.162 |
| Vaccination, n (%) | 3 (3.4%) | 151 (65.4%) | <0.001 |
| The prevalence of pneumonia in COVID-19 patients | 77.0% (67/87) | 34.2% (79/231) | <0.001 |
BMI, body mass index.
COVID-19, coronavirus disease 2019.