Twenty year trends in hospital discharges for asthma among members of a health maintenance organization

William M. Vollmer, A. Sonia Buist, Molly L. Osborne

Research output: Contribution to journalArticle

27 Scopus citations


We examined trends in hospitalizations for asthma from 1967 to 1987 among members of a large health maintenance organization. During this time asthma discharges increased significantly among children, and especially among boys under the age of 5 years. Ninety-five percent of the increase in discharges among boys was explained by a corresponding increase in the number of boys who were hospitalized. Increased readmissions did not account for the rise. Changes in the International Classification of Diseases coding of asthma and diagnostic shift by physicians accounted for only part of the increase. A decline in hospitalizations since 1984 may reflect changes in the management of asthma in the emergency room and not a decline in severe asthma episodes.

Original languageEnglish (US)
Pages (from-to)999-1006
Number of pages8
JournalJournal of Clinical Epidemiology
Issue number9
StatePublished - Sep 1992



  • Asthma
  • Children
  • Epidemiology
  • Health maintenance organization
  • Hospital discharge
  • Longitudinal trends

ASJC Scopus subject areas

  • Epidemiology

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