We compared relative risk of hospitalization/ED recurrence from day 31-180 (Cox proportional hazards regression, covariates=sex, age, current and prior asthma medications, prior oral corticosteroid and short-acting 2 -adrenergic agonist use, initial type of index event) for patients receiving nebulized ICS vs other ICS by age groups (0-4 years and 5-8 years).