title: Characteristics of intensive care units in Michigan: not an open and closed case.
abstract: OBJECTIVE
  Delivery of critical care by intensivists has been recommended by several groups. Our objective was to understand the delivery of critical care physician services in Michigan and the role of intensivists and nonintensivist providers in providing care.
  
  
  METHODS
  Descriptive questionnaire.
  
  
  METHODS
  Intensive care unit (ICU) directors and nurse managers at 96 sites, representing 115 ICUs from 72 hospitals in Michigan.
  
  
  RESULTS
  The primary outcome measure was the percentage of sites utilizing a closed vs. an open model of ICU care. Secondary outcome measures included the percentage of ICUs utilizing a high-intensity service model, hospital size, ICU size, type of clinician providing care, and clinical activities performed. Twenty-four (25%) sites used a closed model of intensive care, while 72 (75%) had an open model of care. Hospitals with closed ICUs were larger and had larger ICUs than sites with open ICUs (P < 0.05). Hospitalists serving as attending physicians were strongly associated with an open ICU (odds ratio [OR] = 12.2; 95% confidence interval [CI] = 2.5-60.2), as was the absence of intensivists in the group (OR = 12.2; 95%CI = 1.4-105.8), while ICU and hospital size were not associated. At 18 sites (20%) all attendings were board certified in Critical Care. Sixty sites had less than 50% board-certified attending physicians.
  
  
  CONCLUSIONS
  The closed intensivist-led model of intensive care delivery is not in widespread use in Michigan. In the absence of intensivists, alternate models of care, including the hospitalist model, are frequently used.
authors.affiliation: University of Michigan, Ann Arbor, Michigan, USA. rhyzy@umich.edu
authors.forename: Robert C
authors.initials: RC
authors.lastname: Hyzy
authors.forename: Scott A
authors.initials: SA
authors.lastname: Flanders
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Pronovost
authors.forename: Sean M
authors.initials: SM
authors.lastname: Berenholtz
authors.forename: Sam
authors.initials: S
authors.lastname: Watson
authors.forename: Chris
authors.initials: C
authors.lastname: George
authors.forename: Christine A
authors.initials: CA
authors.lastname: Goeschel
authors.forename: Judith
authors.initials: J
authors.lastname: Maselli
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Auerbach
mesh_terms: D007362:Intensive Care Units / Q000458:organization & administration*; D007857:Leadership; D008824:Michigan; D017146:Models, Organizational; D011795:Surveys and Questionnaires