Table 1. Comparison between patients with M. pneumoniae pneumonia and those without.
| M. pneumoniae group | Non M. pneumoniae group | p value | |
| Patients number (n) | 136 | 818 | |
| Age (years) | 29 (16) | 47 (33) | <0.001 |
| Adolescents, n (%) | 19 (14.0, 8.2–19.8) | 31 (3.8, 2.5–5.3) | <0.001 |
| Male gender, n (%) | 61 (44.9, 36.5–53.2) | 479 (58.6, 55.2–62.0) | 0.004 |
| Comorbidities, n (%) | 7 (5.1, 1.4–8.8) | 177 (21.6, 18.8–24.4) | <0.001 |
| Smoking, n (%) | 21 (15.4, 9.3–21.5) | 233 (28.5, 25.4–31.6) | 0.002 |
| Fever, n (%) | 130 (95.6, 92.2–99.0) | 748 (91.4, 89.5–93.3) | 0.122 |
| Tmax (°C) | 39.2 (0.8) | 39.0 (1.0) | 0.006 |
| Cough, n (%) | 133 (97.8, 95.3–100.0) | 742 (90.7, 88.7–92.7) | 0.006 |
| Sputum, n (%) | 104 (76.5, 69.4–83.6) | 568 (69.4, 66.2–72.6) | 0.105 |
| PSI score | 30.0 (22.0) | 46.0 (38.0) | <0.001 |
| Site of care, n (%) | 0.079 | ||
| Inpatients | 80 (58.8, 50.5–67.1) | 547 (66.9, 63.7–70.1) | |
| Ward | 80 (58.8, 50.5–67.1) | 541 (66.3, 63.1–69.5) | |
| ICU | 0 (0.0) | 6 (0.6, 0.7–1.1) |
Note:The data are presented as n (%, 95% confidence intervals) or median (IQR).