Risk Factors for Near-fatal Asthma: A Case-Control Study in Hospitalized patients with Asthma

摘要

We prospectively recruited patients admitted to the hospital with severe asthma to comprehensively evaluate the association of historical and physiologic features with the risk of near-fatal asthma (NFA). A case-control study design was used. All patients admitted with NFA(cases) were identified prospectively and compared with asthma patients admitted during the same period without respira- tory failure(controls). Nineteen cases(age: 40.2 ± 12.0 yr)(mean±SD) and 80 controls(age: 36±) 13.5 yr) were enrolled.