Associations between residential proximity to a major roadway (417 meters [N = 168]) and primary and secondary outcomes in asthmatic children.

1Adjusted for payor status (private insurance versus Medicaid), race (white versus non-white), parental history of asthma (yes versus no), environmental tobacco smoke exposure at least one day per week (yes versus no), and history of gastroesophageal reflux (yes versus no).2Defined as a hospital stay ≥24 hours.