Table 1. Comparisons in demographic characteristics and comorbidities between cohorts with and without asthma.
| Asthma | |||||
|---|---|---|---|---|---|
| Variables | No (N = 118591) | Yes (N = 29648) | p-value | ||
| n | % | n | % | ||
| Sex | 0.99 | ||||
| Female | 63876 | 53.9 | 15969 | 53.9 | |
| Male | 54715 | 46.1 | 13679 | 46.1 | |
| Age, years | 0.99 | ||||
| 20–34 | 21560 | 18.2 | 5390 | 18.2 | |
| 35–49 | 26516 | 22.4 | 6629 | 22.4 | |
| 50–64 | 31896 | 26.9 | 7974 | 26.9 | |
| ≥ 65 | 38619 | 32.6 | 9655 | 32.6 | |
| *Mean (SD) | 53.7 | 18.1 | 54.2 | 18.1 | <0.001 |
| Comorbidity | |||||
| COPD | 7728 | 6.52 | 9182 | 31.0 | <0.001 |
| GERD | 805 | 0.68 | 479 | 1.62 | <0.001 |
| Allergic rhinitis | 8622 | 7.27 | 8914 | 30.1 | <0.001 |
| Chronic sinusitis | 1582 | 1.33 | 1139 | 3.84 | <0.001 |
| Atopic dermatitis | 1528 | 1.29 | 781 | 2.63 | <0.001 |
| Anxiety | 4916 | 4.15 | 2367 | 7.98 | <0.001 |
| Depression | 3714 | 3.13 | 1631 | 5.50 | <0.001 |
| Obesity | 953 | 0.80 | 519 | 1.75 | <0.001 |
COPD = chronic obstructive pulmonary disease, GERD = gastroesophageal reflux disease;
Chi-square test was used to test categorical variables
*2-sample t-test was used to test mean ages.