Treated prevalence rates of severe mental illness among HMO members

R. E. Johnson, Bentson McFarland

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Objectives: The authors examined the extent to which health maintenance organizations (HMOs) enroll and provide services to people with severe mental illness. Methods: The automated pharmacy system of a large HMO identified members who had received a prescription for an antipsychotic drug or lithium during the two-year study period (1986 and 1987). These data, combined with data from a 2 percent random sample of HMO members and from medical records, were used to identify members who satisfied DSM-III-R criteria for schizophrenia and bipolar disorder. Treated prevalence rates derived from these data were compared with estimated treated prevalence data obtained in the National Institute of Mental Health's Epidemiologic Catchment Area (ECA) survey. Results: Although methodological complications and small sample sizes precluded a detailed comparison, the study found a significantly lower treated prevalence rate of schizophrenia among HMO members than in the ECA survey. The treated prevalence rate of bipolar disorder was also lower than the ECA rate, but the difference was not significant. Conclusions: The differences in treated prevalence rates seemed to be the result of different study methodologies and factors influencing HMO membership. The results underscore the need for a comprehensive study of the course of severe mental illness among HMO members.

Original languageEnglish (US)
Pages (from-to)919-924
Number of pages6
JournalHospital and Community Psychiatry
Volume45
Issue number9
StatePublished - 1994
Externally publishedYes

Fingerprint

Health Maintenance Organizations
Bipolar Disorder
Schizophrenia
National Institute of Mental Health (U.S.)
Prescription Drugs
Lithium
Diagnostic and Statistical Manual of Mental Disorders
Sample Size
Antipsychotic Agents
Medical Records

ASJC Scopus subject areas

  • Psychiatry and Mental health

Cite this

Treated prevalence rates of severe mental illness among HMO members. / Johnson, R. E.; McFarland, Bentson.

In: Hospital and Community Psychiatry, Vol. 45, No. 9, 1994, p. 919-924.

Research output: Contribution to journalArticle

Johnson, RE & McFarland, B 1994, 'Treated prevalence rates of severe mental illness among HMO members', Hospital and Community Psychiatry, vol. 45, no. 9, pp. 919-924.
Johnson, R. E. ; McFarland, Bentson. / Treated prevalence rates of severe mental illness among HMO members. In: Hospital and Community Psychiatry. 1994 ; Vol. 45, No. 9. pp. 919-924.
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