Results
Of 3168 children enrolled, 1757 (55%) were wheezing-positive, who were older, more likely to have a respiratory virus, underlying medical conditions, personal history of reactive airway disease (RAD), and a family history of asthma, compared to wheezing-negative children. Older age, personal history of RAD, family history of asthma, RSV and HMPV were associated with higher odds of wheezing in an adjusted regression model.