Table 1.
A Comparison of the clinical and epidemiological characteristics of patients in the case and control group during 2011–2015.
| Variables | Groups | Epidemic group patient's n (%) | Patients attending at other times n (%) | OR | 95% CI | P value |
|---|---|---|---|---|---|---|
| Gender | Male | 2445 (46.1%) | 421 (46.0%) | 1.004 | 0.873–1.156 | 0.951 |
| Female | 2862 (53.9%) | 495 (54.0%) | ||||
| Age | <20 | 398 (7.5%) | 64 (7.0%) | 1.079 | 0.821–1.419 | 0.585 |
| >20 | 4909 (92.5%) | 852 (93.0%) | ||||
| Asthma history | Yes | 2215 (41.7%) | 447 (48.8%) | 0.752 | 0.653–0.865 | <0.001 † |
| No | 3092 (58.3%) | 469 (51.2%) | ||||
| Allergic reaction history | Yes | 667 (12.6%) | 109 (11.9%) | 1.064 | 0.858–1.321 | 0.572 |
| No | 4640 (87.4%) | 807 (88.1%) | ||||
| Drug history for asthma | Yes | 2084 (39.3%) | 374 (40.8%) | 0.937 | 0.812–1.081 | 0.372 |
| No | 3223 (60.7%) | 542 (59.2%) | ||||
| Smoking | Yes | 3422 (64.5%) | 528 (57.6%) | 1.334 | 1.157–1.539 | <0.001 † |
| No | 1885 (35.5%) | 388 (42.4%) | ||||
| Final decision | Hospitalization | 487 (9.2%) | 55 (6.0%) | 1.582 | 1.186–2.110 | 0.002 † |
| Discharge | 4820 (90.8%) | 861 (94.0%) | ||||
| Recurrence | Yes | 4050 (76.3%) | 684 (74.7%) | 1.093 | 0.930–1.285 | 0.282 |
| No | 1257 (23.7%) | 232 (25.3%) | ||||
| Wheezing | Yes | 1654 (31.2%) | 263 (28.7%) | 1.124 | 0.963–1.312 | 0.137 |
| No |
3653 (68.8%) | 653 (71.3%) | ||||
| Dyspnea | Yes | 5209 (98.2%) | 900 (98.3%) | 0.945 | 0.554–1.611 | 0.835 |
| No† | 98 (1.8%) | 16 (1.7%) | ||||
| Cough | Yes | 3297 (62.1%) | 583 (63.6%) | 0.937 | 0.810–1.084 | 0.380 |
| No | 2010 (37.9%) | 333 (36.4%) | ||||
| Sputum | Yes | 861 (16.2%) | 201 (21.9%) | 0.689 | 0.580–.819 | <0.001 † |
| No | 4446 (83.8%) | 715 (78.1%) |
†Maybe cough variant asthma.