IRR and 95% CIs for primary and secondary outcomes using stricter definitions of resolved and active asthma
| Outcome, cohort | Adjusted IRR (95% CI)a |
|---|---|
| Asthma hospital admissions | |
| Active asthma | Reference |
| Resolved asthma | 0.25 (0.23 to 0.28) |
| URTI hospital admissions | |
| Non-asthma | Reference |
| Active asthma | 0.69 (0.43 to 1.11) |
| Resolved asthma | 0.60 (0.31 to 1.15) |
| LRTI hospital admissions | |
| Non-asthma | Reference |
| Active asthma | 3.20 (2.30 to 4.46) |
| Resolved asthma | 1.06 (0.66 to 1.71) |
| Flu or pneumonia hospital admission | |
| Non-asthma | Reference |
| Active asthma | 1.83 (1.42 to 2.37) |
| Resolved asthma | 1.09 (0.75 to 1.58) |
| GP asthma exacerbation consultations | |
| Active asthma | Reference |
| Resolved asthma | 0.04 (0.03 to 0.06) |
| GP LRTI consultations | |
| Non-asthma | Reference |
| Active asthma | 5.39 (4.87 to 5.96) |
| Resolved asthma | 2.09 (1.81 to 2.40) |
| GP all-cause antibiotic prescriptions | |
| Non-asthma | Reference |
| Active asthma | 2.20 (2.10 to 2.30) |
| Resolved asthma | 1.21 (1.13 to 1.28) |
↵a Models adjusted for age, sex, Index of Multiple Deprivation, Charlson score, and smoking status (using complete cases only), with the practice as a random effect. CI = confidence interval. IRR = incidence rate ratio. LRTI = lower respiratory tract infection. URTI = upper respiratory tract infection.