Table 1.
Baseline characteristics of COVID-19 patients with normal PA-aO2 and abnormal PA-aO2
| Non-group (n = 87) | Group (n = 155) | All patients (n = 242) | p value | |
|---|---|---|---|---|
| Gender (male/female) | 44 (50.57) | 75 (48.39) | 119 (49.17) | 0.744 |
| Age (years), M (IQR) | 41 (29, 58) | 47 (36, 61) | 45 (34, 59.25) | 0.032* |
| Smoking (n, %) | 8 (9.20) | 11 (7.10) | 19 (7.85) | 0.560 |
| Alcohol (n, %) | 5 (5.75) | 5 (3.23) | 10 (4.13) | 0.344 |
| Symptoms | ||||
| Fever (n, %) | 57 (65.52) | 124 (80.00) | 181 (74.79) | 0.013* |
| Fatigue (n, %) | 29 (33.33) | 78 (50.32) | 107 (44.21) | 0.011* |
| Cough (n, %) | 65 (74.71) | 130 (83.87) | 195 (80.58) | 0.084 |
| Shortness of breath | 21 (24.14) | 61 (39.35) | 82 (33.88) | 0.016* |
| Expectoration (n, %) | 39 (44.83) | 69 (44.52) | 108 (44.63) | 0.963 |
| Hemoptysis (n, %) | 2 (2.30) | 5 (3.23) | 7 (2.89) | 0.680 |
| Pharyngalgia (n, %) | 13 (14.94) | 21 (13.55) | 34 (14.05) | 0.680 |
| Vomiting (n, %) | 11 (12.64) | 15 (9.68) | 26 (10.74) | 0.475 |
| Diarrhea (n, %) | 20 (22.99) | 35 (22.58) | 55 (22.73) | 0.942 |
| Abdominal pain (n, %) | 6 (6.90) | 4 (2.58) | 10 (4.13) | 0.106 |
| Nausea (n, %) | 10 (11.49) | 20 (12.90) | 30 (12.40) | 0.750 |
| Anorexia (n, %) | 40 (45.98) | 77 (49.68) | 117 (48.35) | 0.580 |
| Myalgia (n, %) | 8 (9.20) | 16 (10.32) | 24 (0.99) | 0.778 |
| Chill (n, %) | 11 (12.64) | 18 (11.61) | 29 (11.98) | 0.813 |
| Dizziness (n, %) | 12 (13.79) | 17 (10.97) | 29 (11.98) | 0.516 |
| Headache (n, %) | 11 (12.64) | 20 (12.90) | 31 (12.81) | 0.954 |
| Comorbidities | ||||
| Hypertension (n, %) | 10 (11.49) | 26 (16.77) | 36 (14.88) | 0.268 |
| Cardiovascular (n, %) | 6 (6.90) | 3 (1.94) | 9 (3.72) | 0.074 |
| Diabetes (n, %) | 7 (8.05) | 8 (5.16) | 15 (6.20) | 0.372 |
PA-aO2 alveolo–arterial oxygen tension difference
*p < 0.05