Table 1.
Basic characteristics of COVID-19 in mild or common group and severe or critical group in training set.
| Variable | All (408) | Mild or common group (348) | Severe or critical group (60) | P | × 2/Z |
|---|---|---|---|---|---|
| Gender (male%) | 196 (48.0) | 163 (46.8) | 33 (55.0) | 0.847 | 0.041 |
| Incubation period | 9 (6, 14) | 9 (7, 14) | 7 (4, 15) | 0.389 | − 0.862 |
| Age | 47 (37, 56) | 46 (35, 56) | 48 (47, 67) | 0.025 | − 2.236 |
| BMI | 22.84 (21.60, 24.51) | 22.35 (21.05, 24.44) | 26.54 (24.22, 27.34) | 0.000 | − 4.094 |
| Basic diseases | 164 (40.2) | 130 (37.4) | 34 (56.7) | 0.196 | 1.985 |
| Fever | 296 (72.5) | 236 (67.8) | 60 (100) | 0.007 | 8.039 |
| Headache | 44 (10.8) | 29 (8.3) | 15 (25) | 0.497 | 0.666 |
| Runny nose | 32 (7.8) | 24 (6.8) | 8 (13.3) | 0.213 | 1.447 |
| Dry cough | 116 (28.4) | 98 (28.2) | 18 (30.0) | 0.929 | 0.001 |
| Expectoration | 96 (23.5) | 91 (26.1) | 5 (8.3) | 0.095 | 3.168 |
| Sore throat | 64 (15.7) | 58 (16.7) | 6 (10.0) | 0.213 | 1.447 |
| Chest tightness | 72 (17.6) | 53 (15.2) | 19 (31.7) | 0.078 | 3.394 |
| Flustered | 32 (7.8) | 17 (4.9) | 15 (25.0) | 0.03 | 4.979 |
| Diarrhea | 28 (6.9) | 11 (3.2) | 17 (28.6) | 0.022 | 5.623 |
| SP02 | 95 (93, 96) | 95 (94, 96) | 93 (84, 96) | 0.015 | − 2.439 |