Table I.
Clinical data of patients (n, %).
| Variables | Values |
|---|---|
| Sex | |
| Male | 399 (58.2) |
| Female | 286 (41.8) |
| Age (years) | |
| <30 | 428 (62.5) |
| ≥30 | 257 (37.5) |
| Hospitalization time (h) | |
| <10 | 345 (50.4) |
| ≥10 | 340 (49.6) |
| Clinical symptoms | |
| Fever | 272 (39.7) |
| Chest pain | 178 (26.0) |
| Chest distress | 156 (22.8) |
| Dyspnea | 79 (11.5) |
| Residential location | |
| Urban | 386 (56.4) |
| Rural | 299 (43.6) |
| Distribution of pleural effusion | |
| Left | 171 (25.0) |
| Right | 418 (61.0) |
| Bilateral | 96 (14.0) |
| Exercise habit | |
| Yes | 441 (64.4) |
| No | 244 (35.6) |
| Smoking history | |
| Yes | 496 (72.4) |
| No | 189 (27.6) |
| Color of pleural effusion | |
| Yellow | 562 (82.1) |
| Bloody | 123 (17.9) |