Table I.
Clinicopathological and demographical characteristics.
| Characteristic | Patient population |
|---|---|
| Age (years) | |
| Minimum | 2 |
| Maximum | 16 |
| Mean ± SD | 12.45±3.12 |
| Sex | |
| Male | 446 (47) |
| Female | 503 (53) |
| Ethnicity | |
| Han Chinese | 871 (92) |
| Mongolian | 62 (2) |
| Tibetan | 16 (2) |
| Fever | 361 (38) |
| Dyspnea | 711 (75) |
| Cough | 778 (82) |
| Expectoration of purulent sputum | 3,445 (47) |
| Decreased breath sounds | 145 (15) |
| Pleuritic chest pain | 345 (36) |
| Chills | 281 (30) |
| Headache | 157 (17) |
Constant variables are presented as number (percentage). Continuous variables are presented as mean ± SD.