Respiratory and total consultations at 12 months
| Characteristic | Level | Intervention (N=274) | Control (N=277) |
| Mean respiratory consultations during 12-month follow-up (SD) (n) | 0.67 (1.01) (269) | 0.47 (0.78) (273) | |
| Number of respiratory consultations during 12-month follow-up | 0 | 162 (59.1%) | 184 (66.4%) |
| 1 | 59 (21.5%) | 58 (20.9%) | |
| 2 | 27 (9.9%) | 22 (7.9%) | |
| 3 | 17 (6.2%) | 9 (3.2%) | |
| 4 | 3 (1.1%) | 0 | |
| 5 | 1 (0.4%) | 0 | |
| Missing | 5 (1.8%) | 4 (1.4%) | |
| Mean total consultations during 12-month follow-up (SD) (n) | 9.05 (7.53) (268) | 8.98 (8.14) (273) | |
| At least one consultation during 12-month follow-up | No | 21 (7.7%) | 25 (9.0%) |
| Yes | 247 (90.1%) | 248 (89.5%) | |
| Missing | 6 (2.2%) | 4 (1.4%) |