Table I.
Comparison of clinical characteristics between the pneumonia group and the non-pneumonia groups.
| Characteristics | Pneumonia group (51 patients) | Non-pneumonia group (155 patients) | P-value |
|---|---|---|---|
| Gender, n (%) | |||
| Men | 31 (60.8) | 106 (68.4) | 0.318 |
| Women | 20 (39.2) | 49 (31.6) | |
| Median age [M(IQR) years], n (%) | 26 (6–45) | 18 (12–21) | 0.001 |
| 0–5 | 12 (23.5) | 6 (3.9) | <0.001 |
| 6–44 | 25 (49.0) | 147 (94.8) | <0.001 |
| ≥45 | 14 (27.5) | 2 (1.3) | <0.001 |
| BMI≥30 kg/m2, n (%) | 7 (13.7) | 10 (6.5) | 0.139 |
| Underlying diseases, n (%) | 13 (25.5) | 4 (2.6) | <0.001 |
| Chronic lung diseases, n (%) | 8 (15.7) | 1 (0.6) | <0.001 |
| Initial symptoms, n (%) | |||
| Fever | 33 (64.7) | 142 (91.6) | <0.001 |
| Cough | 43 (84.3) | 103 (67.3) | 0.018 |
| Expectoration | 32 (62.7) | 41 (26.5) | <0.001 |
| Sore throat | 6 (11.8) | 31 (20.0) | 0.184 |
| Dyspnea | 10 (19.6) | 1 (0.6) | <0.001 |
| Headache | 2 (3.9) | 29 (18.7) | 0.010 |
| Vomiting | 1 (2.0) | 10 (6.5) | 0.299 |
| Diarrhea | 0 | 2 (1.3) | 1.0 |
| Median onset-to-treatment time [M(IQR) d], n (%) | 6 (4–7) | 2 (1–3) | <0.001 |
| ≤48 h | 3 (5.9) | 110 (71.0) | <0.001 |
| >48 h | 48 (94.1) | 45 (29.0) | |
IQR, interquartile range; BMI, body mass index; d, days.