title: How many assertive community treatment teams do we need?
abstract: OBJECTIVE
  Assertive community treatment (ACT) reduces hospitalizations for persons with severe mental illness. However, not everyone who needs ACT receives it. Without empirical guidelines for ACT planning, communities are likely to underestimate or overestimate the number of teams they need; thus the capacity of the programs will not meet current needs. In this study, administrative data were used to develop empirical estimates for the number of required ACT teams. These estimates were then used to examine current conceptual guidelines for developing the number of ACT teams that communities need.
  
  
  METHODS
  Administrative data from a large, urban county were used to enumerate all persons with a severe mental illness who had three or more hospitalizations within one year (ACT eligible).
  
  
  RESULTS
  Fifty-one percent of persons with a severe mental illness were found to be eligible for ACT (743 of 1,453 persons). This figure represents 2.2 percent of the county's mental health users and .06 percent of its adult population.
  
  
  CONCLUSIONS
  Communities should develop enough ACT teams to serve approximately 50 percent of their populations of persons with severe mental illness or roughly .06 percent of their adult populations.
authors.affiliation: Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, CB#7590, 725 Martin Luther King Jr. Boulevard, Chapel Hill, NC 27599-7590, USA. cuddeback@mail.schsr.unc.edu
authors.forename: Gary S
authors.initials: GS
authors.lastname: Cuddeback
authors.forename: Joseph P
authors.initials: JP
authors.lastname: Morrissey
authors.forename: Piper S
authors.initials: PS
authors.lastname: Meyer
mesh_terms: D000293:Adolescent; D000328:Adult; D018672:Community Health Planning; D003156:Community Mental Health Services / Q000600:supply & distribution*; D006801:Humans; D001523:Mental Disorders / Q000453:epidemiology / Q000628:therapy*; D008875:Middle Aged; D020380:Needs Assessment; D010348:Patient Care Team; D015995:Prevalence; D012720:Severity of Illness Index; D013808:Therapeutic Community; D014481:United States / Q000453:epidemiology; D019037:Urban Health Services / Q000600:supply & distribution*