Table I.
Clinical characteristics of included patients
| Characteristic | Total (n = 106) | Patients without asthma (n = 83) | Patients with asthma (n = 23) | P value |
|---|---|---|---|---|
| Sex | .63 | |||
| Female | 40 (37.7) | 30 (36.1) | 10 (43.5) | |
| Male | 66 (62.3) | 53 (63.9) | 13 (56.5) | |
| Age (y) | 63.5 (54.2-72.0) | 65.0 (56.0-72.0) | 59.0 (49.5-9.5) | .37 |
| Delay between onset of symptoms and hospitalization (d) | 7.0 (4.2-10.0) | 7.0 (4.0-10.0) | 7.0 (5.0-9.0) | .90 |
| Comorbidity | ||||
| Obesity (body mass index > 30 kg/m2) | 42 (39.6) | 33 (39.8) | 9 (39.1) | >.99 |
| Hypertension | 45 (42.5) | 37 (44.6) | 8 (34.8) | .48 |
| Diabetes | 23 (21.7) | 19 (22.9) | 4 (17.4) | .78 |
| Chronic heart disease | 6 (5.7) | 5 (6.0) | 1 (4.3) | >.99 |
| Chronic renal insufficiency | 5 (4.8) | 4 (4.9) | 1 (4.3) | >.99 |
| Lung cancer | 7 (6.6) | 6 (7.2) | 1 (4.3) | >.99 |
| Obstructive sleep apnea | 14 (13.2) | 12 (14.5) | 2 (8.7) | .73 |
| Smokers | ||||
| Past smokers | 33 (31.1) | 23 (27.7) | 10 (43.5) | .20 |
| Current smokers | 6 (5.7) | 5 (6.0) | 1 (4.3) | >.99 |
| Smoking index∗ | 0.0 (0.0-20.0) | 0.0 (0.0-20.0) | 0.0 (0.0-15.0) | .60 |
Data are given as n (%) or median (interquartile range).
∗
Smoking index = number of cigarettes smoked per day × years of tobacco use.