Binary multiple logistic regression analysis for the likelihood of poor symptom control (ACT/CACT <20) at follow-up (n=175)
| Variable | OR | 95% CI | P value |
| Age (years) | 1.02 | 0.89 to 1.17 | 0.79 |
| Male | 1.33 | 0.59 to 2.99 | 0.50 |
| ≥1 asthma attack in 6 months preceding clinic review | 1.02 | 0.40 to 2.58 | 0.97 |
| ACT/CACT <20 at clinic review | 4.37 | 1.86 to 10.25 | 0.001 |
| FEV1 z-score at clinic review | 1.22 | 0.76 to 1.94 | 0.41 |
| FEV1/FVC z-score at clinic review | 0.70 | 0.43 to 1.14 | 0.15 |
| FeNO (ppb) at clinic review | 1.00 | 0.98 to 1.01 | 0.55 |
| Deprivation index of registered practice | 0.79 | 0.68 to 0.93 | 0.003 |
| BMI ≥91st centile (overweight/obese) | 0.82 | 0.32 to 2.11 | 0.69 |
| AMR at baseline | 1.09 | 0.37 to 3.27 | 0.88 |
| Ethnicity (reference ethnic group=white) | |||
| Black | 1.85 | 0.22 to 15.28 | 0.57 |
| Asian | 0.98 | 0.31 to 3.08 | 0.97 |
| Mixed/other | 0.42 | 0.04 to 5.10 | 0.50 |
ACT, asthma control test; AMR, asthma medication ratio; BMI, body mass index; CACT, childhood asthma control test; FeNO, fraction of exhaled nitric oxide; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity.