| Symptoms | All |
| Mild intermittent | Mild persistent | Moderate persistent | Severe persistent | |
Aged 0–4 yrs n | 48 | 28 | 25 | 40 | 141 |
Patients with at least one hospital admission % | 21 | 21 | 12 | 13 | 17 |
Mean number of nights hospitalised | 1.69 | 1.5 | 0.88 | 0.1 | 1.06 |
Patients with at least one ER attendance % | 29 | 43 | 16 | 28 | 29 |
Mean number of attendances | 0.52 | 0.89 | 0.36 | 0.98 | 0.7 |
Patients with at least one unscheduled physician visit % | 42 | 46 | 44 | 50 | 45 |
Mean number of visits | 2.06 | 1.18 | 1.8 | 1.65 | 1.72 |
Aged 5–15 yrs n | 359 | 107 | 72 | 74 | 612 |
Patients with at least one hospital admission % | 3 | 7 | 11 | 18 | 7 |
Mean number of nights hospitalised | 0.5 | 0.16 | 0.78 | 1.18 | 0.56 |
Patients with at least one ER attendance % | 11 | 14 | 26 | 26 | 15 |
Mean number of attendances | 0.19 | 0.2 | 0.58 | 0.85 | 0.32 |
Patients with at least one unscheduled physician visit % | 22 | 35 | 40 | 41 | 29 |
Mean number of visits | 0.6 | 1.13 | 1.39 | 2.58 | 1.02 |
Aged ≥16 yrs n | 758 | 395 | 476 | 421 | 2050 |
Patients with at least one hospital admission % | 2 | 4 | 8 | 16 | 7 |
Mean number of nights hospitalised | 0.17 | 0.4 | 0.97 | 2.47 | 0.91 |
Patients with at least one ER attendance % | 6 | 10 | 13 | 17 | 11 |
Mean number of attendances | 0.07 | 0.15 | 0.31 | 0.64 | 0.26 |
Patients with at least one unscheduled physician visit % | 15 | 19 | 29 | 38 | 24 |
Mean number of visits | 0.36 | 0.58 | 0.96 | 2.02 | 0.88 |