Table 1.
Baseline demographics of 308 patients with asthma followed at a university hospital respiratory outpatient clinic.
| Baseline characteristic | N = 308a |
|---|---|
| Female | 224 (73%) |
| Age | 51 (37, 62) |
| Body mass index (BMI) (n = 306) | 27.1 (23.8, 31.1) |
| FEV1 (%pred) | 91 (76, 101) |
| FVC (%pred, n = 299) | 100 (86, 113) |
| FEV1/FVC (n = 299) | 0.90 (0.84, 0.96) |
| Smoking Status (n = 296) | |
| Current smoker | 13 (4.4%) |
| Ex-smoker | 113 (38%) |
| Never smoker | 170 (57%) |
| Pack-years (n = 109) | 15 (7, 33) |
| FeNO (n = 291) | 14 (9, 25) |
| Comorbidities | |
| Allergies | 170 (55%) |
| Rhinitis | 97 (31%) |
| Nasal polyps | 23 (8%) |
| CVD | 26 (8%) |
| COPD | 39 (13%) |
| Depression or anxiety | 39 (13%) |
| Severe psychiatric disease | 15 (5%) |
an (%); Median (IQR).
FEV1, forced expiratory volume; FVC, forced vital capacity; COPD, chronic obstructive pulmonary disease; CVD, cardiovascular disease; FeNO, fractional exhaled nitric oxide.