Characteristics of users and non-users of inhaled corticosteroids among the 35 399 controls from the full cohort and the 13 636 controls from the hospitalised cohort
| Full cohort | Hospitalised cohort | |||||
|---|---|---|---|---|---|---|
| Regular use | Irregular use | Non-use | Regular use | Irregular use | Non-use | |
| MDI=metered dose inhaler. | ||||||
| Number | 1351 | 6566 | 27482 | 1021 | 3703 | 8912 |
| Proportion (%) | 3.8 | 18.6 | 77.6 | 7.5 | 27.2 | 65.3 |
| Mean age (years) | 29.1 | 24.8 | 22.3 | 29.2 | 24.4 | 21.2 |
| Percentage male | 56.7 | 52.8 | 56.7 | 49.6 | 48.3 | 52.8 |
| Time to index date (years) | 5.1 | 4.4 | 4.2 | 4.6 | 4.4 | 4.5 |
| Hospitalisation during baseline (%) | 33.8 | 29.5 | 21.3 | 50.6 | 46.9 | 37.8 |
| Medication use in the previous year (%): | ||||||
| Oral corticosteroids | 48.1 | 37.2 | 10.6 | 41.2 | 37.9 | 11.2 |
| Inhaled β agonists (>18 MDIs) | 21.2 | 12.1 | 6.0 | 20.6 | 11.4 | 8.0 |
| Nebulised β agonists | 14.9 | 18.5 | 7.3 | 21.8 | 23.1 | 8.8 |
| Theophylline | 50.4 | 40.7 | 36.1 | 45.0 | 36.7 | 34.3 |