Potential prognostic factors at presentation for having therapy resistant asthma (TRA) after variables were dichotomised using logistic regression analysis
| Odds ratio (95% CI) | |
|---|---|
| Inhaled steroid >2000 μg at referral | 8.5 (2.2 to 33.1) |
| Previous specialist attendance | 4.4 (1.3 to 15.0) |
| Pre-bronchodilator FEV1% <70% predicted | 4.0 (1.2 to 13.9) |