Emergency Medicine / Asthma / Treatment Outcome / Risk assessment / Adolescent / Canada / Humans / Child / Female / Male / Confidence intervals / Follow-up studies / Length of Stay / Clinical Sciences / Public health systems and services research / Sex Factors / Odds ratio / Retrospective Studies / Age Factors / Metered Dose Inhalers / Risk Assessment / Continuity of Patient Care / Cohort Studies / Severity of Illness Index / Child preschool / Canada / Humans / Child / Female / Male / Confidence intervals / Follow-up studies / Length of Stay / Clinical Sciences / Public health systems and services research / Sex Factors / Odds ratio / Retrospective Studies / Age Factors / Metered Dose Inhalers / Risk Assessment / Continuity of Patient Care / Cohort Studies / Severity of Illness Index / Child preschool
