title: Impact of Type of Medical Specialist Involvement in Chronic Illness Care on Emergency Department Use.
abstract: Medical specialist physicians may act as either consultants or co-managers for patients managed in primary care settings. We assessed whether the type of specialist involvement affected emergency department (ED) use for patients with chronic diseases.
  
  
  
  In total, 709 primary care patients with arthritis, chronic obstructive pulmonary disease, diabetes or congestive heart failure were followed for one year using survey and administrative data. Multivariate logistic regressions were used to compare all-cause ED use according to specialist involvement (none, co-manager or consultant).
  
  
  
  In total, 240 (34%) patients visited the ED. ED use did not differ between those with specialist involvement and those without it, either as co-managers (adjusted OR = 1.06, 95% CI = [0.61, 1.85]) or consultants (adjusted OR = 0.97, 95% CI = [0.63, 1.50]).
  
  
  
  The type of specialist involvement is not associated with all-cause ED use in primary care patients with chronic diseases. Indications for co-management should be further investigated.
authors.affiliation: Professor, École de réadaptation, Université de Montréal, Montreal, QC.
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Larochelle
authors.affiliation: Professor, École de réadaptation, Researcher, Institut de recherche en santé publique de l'Université de Montréal (IRSPUM), Université de Montréal, Montreal, QC.
authors.forename: Debbie Ehrmann
authors.initials: DE
authors.lastname: Feldman
authors.affiliation: Center for Primary Health Care and Equity, University of New South Wales, Bureau of Health Information, Sydney, Australia.
authors.forename: Jean-Frédéric
authors.initials: JF
authors.lastname: Levesque
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001168:Arthritis / Q000628:therapy; D002908:Chronic Disease / Q000628:therapy*; D003920:Diabetes Mellitus / Q000628:therapy; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D005260:Female; D006333:Heart Failure / Q000628:therapy; D006801:Humans; D008297:Male; D008511:Medicine / Q000706:statistics & numerical data*; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000628:therapy; D011792:Quebec; D012017:Referral and Consultation / Q000706:statistics & numerical data; D012737:Sex Factors; D055815:Young Adult