Table 1 Characteristics of cases and controls
Characteristic | Control(n%) | Case (n%) | P value |
|---|---|---|---|
Gender | |||
Male | 162 (38.76%) | 118 (39.33%) | 0.876 |
Female | 256 (61.24%) | 182 (60.67%) | |
Age (mean ± SD,years) | 44.09 ± 13.75 | 43.6 ± 13.48 | 0.64 |
Smoking status | |||
Current and ex-smokers | 55 (13.16%) | 49 (16.33%) | 0.179 |
Non-smoking | 207 (49.52%) | 247 (82.33%) | |
Smoking status unclear | 156 (37.32%) | 4 (1.33%) | |
BMI (mean ± SD) | 22.94 ± 3.34 | 23.11 ± 3.28 | 0.517 |
BMI < 24 | 227 (54.31%) | 197 (65.67%) | |
BMI ≥ 24 | 121 (29.67%) | 103 (34.33%) | |
Types of patients | |||
Emergency patients or inpatients | 34 (11.33%) | ||
Outpatients | 266 (88.67%) | ||
Asthma onset time | |||
Early-onset asthma(< 18 years old) | 42 (14.00%) | ||
Late-onset asthma(≥18 years old) | 223 (74.33%) | ||
Onset time unclear | 35 (11.67%) | ||
Eosinophil count | 171 (57.00%) | ||
Total IgE | 139 (46.33%) | ||
Asthma with pulmonary function test | 174 (58.00%) | ||
FEV1% predicted (mean ± SD) | 83.61 ± 19.97 | ||
FEV1/FVC%(mean ± SD) | 72.37 ± 13.63 | ||
Provocation test or relaxation test | 153 (51%) | ||
Positive provocation test or relaxation test | 134 (44.67%) | ||
Treatment scheme | |||
Step 3 treatment | 10 (3.33%) | ||
Step 4 treatment | 175 (58.33%) | ||
Step 5 treatment | 38 (12.67%) | ||