Hospital admission in 12 months prior to clinical assessment | Unscheduled visits in prior 12 months | 0.051 (0.033 to 0.071) | p<0.001 |
| Total number of prior intensive care admissions | 0.086 (0.012 to 0.16) | p<0.05 |
| Hospital centre | Belfast −0.108 (−0.341 to 0.126) | p<0.001 |
Brompton 0.418 (0.187 to 0.650) |
Leicester 0.077 (−0.160 to 0.314) |
Manchester 0 |
| On theophylline at initial assessment | 0.192 (0.017 to 0.366) | p<0.05 |
Rescue steroids in 12 months prior to clinical assessment | Hospital centre | Belfast 0.588 (0.295 to 0.881) | p<0.001 |
Brompton 0.784 (0.490 to 1.078) |
Leicester 0.757 (0.458 to 1.055) |
Manchester 0 |
| Blood eosinophils at first assessment | 0.238 (0.105 to 0.372) | p<0.001 |
| Age at first assessment at Difficult Asthma Service | −0.001 (−0.019 to −0.003) | p<0.01 |
| Nebuliser usage at initial assessment | 0.223 (0.004 to 0.443) | p<0.05 |
Unscheduled visits in 12 months prior to clinical assessment | Age at first assessment at difficult asthma service | −0.011 (−0.019 to −0.003) | p<0.01 |
| Hospital centre | Belfast 0.500 (0.188 to 0.813) | p<0.01 |
Brompton 0.148 (−0.159 to 0.454) |
Leicester 0.418 (−0.090 to 0.746) |
Manchester 0 |
| Gender | 0.284 (0.051 to 0.518) | p<0.05 |
| Blood eosinophils at first assessment | 0.147 (0.003 to 0.290) | p<0.05 |