Clinical characteristics and prognosis of COVID-19 patients
| Parameters | COVID-19 patients without underlying asthma | COVID-19 patients with underlying asthma | p-value | COVID-19 patients with underlying asthma | |||||
| Step 1 | Step 2 | Step 3 | Step 4 | Step 5 | p-value | ||||
| Age (years); N (%) | |||||||||
| 0–9 | 62 (0.8%) | 20 (9.2%) | <0.001** | 2 (3.9%) | 0 (0.0%) | 0 (0.0%) | 18 (19.2%) | 0 (0.0%) | 0.058 |
| 10–19 | 343 (4.7%) | 6 (2.8%) | 1 (2.0%) | 0 (0.0%) | 1 (4.2%) | 4 (4.3%) | 0 (0.0%) | ||
| 20–29 | 1833 (24.9%) | 19 (8.7%) | 8 (15.7%) | 3 (6.7%) | 3 (12.5%) | 5 (5.3%) | 0 (0.0%) | ||
| 30–39 | 758 (10.3%) | 18 (8.2%) | 4 (7.8%) | 3 (6.7%) | 1 (4.2%) | 10 (10.6%) | 0 (0.0%) | ||
| 40–49 | 983 (13.3%) | 25 (11.5%) | 7 (13.7%) | 5 (11.1%) | 4 (16.7%) | 8 (8.5%) | 1 (25.0%) | ||
| 50–59 | 1468 (19.9%) | 34 (15.6%) | 10 (19.6%) | 6 (13.3%) | 5 (20.8%) | 13 (13.8%) | 0 (0.0%) | ||
| 60–69 | 1020 (13.8%) | 36 (16.5%) | 7 (13.7%) | 12 (26.7%) | 4 (16.7%) | 13 (13.8%) | 0 (0.0%) | ||
| 70– | 846 (11.5%) | 60 (27.5%) | 12 (23.5%) | 16 (35.6%) | 6 (25.0%) | 23 (24.5%) | 3 (75.0%) | ||
| Sex; N (%) | |||||||||
| Male | 3000 (40.7%) | 95 (43.6%) | 0.393 | 23 (45.1%) | 20 (44.4%) | 12 (50.0%) | 38 (40.4%) | 2 (50.0%) | 0.923 |
| Female | 4372 (59.3%) | 123 (56.4%) | 28 (54.9%) | 25 (55.6%) | 12 (50.0%) | 56 (59.6%) | 2 (50.0%) | ||
| Charlson comorbidity index; N (%) | |||||||||
| 0 | 2029 (27.5%) | 0 (0.0%) | <0.001** | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 0.017* |
| 1 | 1726 (23.4%) | 48 (22.0%) | 12 (23.5%) | 3 (6.7%) | 5 (20.8%) | 28 (29.8%) | 0 (0.0%) | ||
| 2 | 1179 (16.0%) | 40 (18.4%) | 11 (21.6%) | 5 (11.1%) | 7 (29.2%) | 17 (18.1%) | 0 (0.0%) | ||
| ≥3 | 2438 (33.1%) | 130 (59.6%) | 28 (54.9%) | 37 (82.2%) | 12 (50.0%) | 49 (52.1%) | 4 (100%) | ||
| Prognosis; N (%) or mean±standard deviation) | |||||||||
| Mortality | 210 (2.8%) | 17 (7.8%) | <0.001** | 5 (9.8%) | 2 (4.4%) | 1 (4.2%) | 9 (9.6%) | 0 (0.0%) | 0.703 |
| Admission to ICU | 208 (2.8%) | 7 (3.2%) | 0.733 | 3 (5.9%) | 1 (2.2%) | 0 (0.0%) | 3 (3.2%) | 0 (0.0%) | 0.691 |
| Duration of admission (days) | 20.1±12.2 | 21.0±13.5 | 0.285 | 18.7±12.0 | 23.7±15.7 | 22.7±13.0 | 19.9±12.6 | 38.3±16.4 | 0.026* |
| Total medical cost (USD) | 4261.0±5354.0 | 5388.1±10 135.3 | 0.003* | 4403.5±4992.1 | 6242.7±9180.5 | 4694.6±3815.9 | 5669.8±13470.9 | 5868.4±2789.8 | 0.912 |
| Total | 7372 (97.1%) | 218 (2.9%) | 51 (23.4%) | 45 (20.6%) | 24 (11.0%) | 94 (43.1%) | 4 (1.8%) | ||
USD 1 US dollar=1228.40 Korean Won at 1st June 2020.
**<0.001, *<0.05.