Table 1 Characteristics of study participants at randomization
Intervention group (n = 46) | Control group (n = 50) | P value | |
|---|---|---|---|
Age (months), mean (SD) | 25.8 (9.6) | 27.3 (12.2) | 0.501 |
Male | 28 (60.9%) | 29 (58.0%) | 0.775 |
Weight (kg), mean (SD) | 12.8 (2.1) | 13.0 (3.2) | 0.806 |
Height (cm), mean (SD) | 88.7 (7.8) | 88.4 (9.9) | 0.883 |
First wheeze age (months), mean (SD) | 11.9 (8.2) | 12.9 (9.6) | 0.597 |
Episodes number of wheezing before the diagnosis of asthma, mean (SD) | 5.3 (3.3) | 5.5 (3.3) | 0.788 |
Number of ventilator assisted ventilation required before enrollment, mean (SD) | 1.1 (0.2) | 1.0 (0.2) | 0.559 |
Eczema | 25 (54.3%) | 26 (52.0%) | 0.818 |
Rhinitis | 24 (52.2%) | 31 (62.0%) | 0.331 |
Food allergy | 14 (30.4%) | 16 (32.0%) | 0.869 |
Annual household income (¥ yuan), mean (SD) | 212,625.0 (239,205.4) | 229,898.0 (252,453.6) | 0.743 |