Morbidity at baseline(T0) and changes over a 6-month period in the intervention and control groups
| T0 | ΔT0–T6 | |||||
| Intervention | Control | p-value | Intervention | Control | p-value | |
| Extra visits to general physician | 3.8±4.8 | 2.4±2.8 | 0.44 | 2.9±5.3 | 1.4±1.7 | 0.001 |
| Visits paediatrician | 4.2±3.4 | 2.1±3.0 | 0.06 | 1.5±4.6 | -0.54±1.1 | 0.03 |
| Hospital admissions | 0.6±2.2 | 0.5±1.9 | 0.83 | 0.5±2.4 | -0.23±0.1 | 0.31 |
| Asthma attacks | 1.9±3.2 | 2.3±4.1 | 0.80 | 0.4±5.3 | 0.08±1.1 | 0.95 |
| Oral prednisone courses | 1.6±2.5 | 1.3±3.0 | 0.34 | 1.4±2.6 | 0.08±0.3 | 0.02 |
| Days absent from school | 7.4±11.2 | 6.8±9.0 | 0.92 | 7.2±11.1 | -2.4±5.1 | 0.04 |
| Days parent home from work | 4.3±8.5 | 6.2±10.1 | 0.65 | 4.6±9.3 | 3.3±6.0 | 0.38 |
Numbers per year are presented as mean±sd, unless otherwise stated. Data per 6-months were adjusted to a 1-yr period. Δ: change between the 6-month period prior to and after T0; T6: 6 months after T0. p-values were calculated using the Mann–Whitney test between groups. p<0.05 was regarded as significant.