Table 1.
Baseline characteristics
| Characteristics | N = 130 |
|---|---|
| Age, mean (SD) | 5.3 (0.7%) |
| Male | 80 (62%) |
| Allergic diseases ever | |
| Atopic eczema | 74 (57%) |
| Symptoms within past 12 months | 50 (38%) |
| Allergic rhinitis diagnosis | 91 (70%) |
| Symptoms within past 12 months | 109 (84%) |
| Adverse reaction to food | 48 (37%) |
| Adverse reaction to bee or wasp | 20 (15%) |
| Adverse reaction to latex | 1 (1%) |
| Asthma severity | |
| Intermittent | 32 (25%) |
| Mild persistent | 77 (59%) |
| Moderate persistent | 21 (16%) |
| Severe persistent | 0 (0%) |
| Asthma treatment during last 3 months | |
| Inhaled corticosteroid | 108 (83%) |
| Leukotriene receptor antagonist | 55 (42%) |
| Long‐acting beta2‐agonist | 20 (51%) |
| Status at study entry | |
| Skin prick test positive for aeroallergens | 72 (55%) |
| Peak expiratory flow | |
| >80% | 101/121 (83%) |
| 60%‐80% | 16/121 (13%) |
| <60% | 4/121 (3%) |
| Parental smoking | 44 (34%) |
| Parental allergic illnesses ever | |
| Eczema | 47 (36%) |
| Allergic rhinitis | 81 (62%) |
| Asthma | 51 (39%) |
| Adverse reaction to food | 34 (26%) |
| Animal exposure on a weekly basis | |
| Indoor pets | 54 (42%) |
| Cat | 24/77 (31%) |
| Dog | 30/76 (39%) |
| Farm animal | 4/76 (5%) |
| Other | 17/76 (22%) |
| Breastfed | 110 (85%) |
| Vitamin D supplementation | 45/119 (38%) |
| In milk | 62/112 (55%) |
| In cereal | 40/103 (39%) |
| In yogurt | 48/112 (43%) |
Data are shown as number of patients (%) unless otherwise expressed.
See more patient characteristics in Table S1.