title: Randomized, controlled trial of an interactive videodisc decision aid for patients with ischemic heart disease.
abstract: OBJECTIVE
  To determine the effect of the Ischemic Heart Disease Shared Decision-Making Program (IHD SDP) an interactive videodisc designed to assist patients in the decision-making process involving treatment choices for ischemic heart disease, on patient decision-making.
  
  
  METHODS
  Randomized, controlled trial.
  
  
  METHODS
  The Toronto Hospital, University of Toronto, Toronto, Ontario, Canada.
  
  
  METHODS
  Two hundred forty ambulatory patients with
  
  
  RESULTS
  The primary outcome was patient satisfaction with the decision-making process. This was measured using the 12-item Decision-Making Process Questionnaire that was developed and validated in a randomized trial of the benign prostatic hyperplasia SDP. Secondary outcomes included patient knowledge (measured using 20 questions about knowledge deemed necessary for an informed treatment decision), treatment decision, patient-angiographer agreement on decision, and general health scores. Outcomes were measured at the time of treatment decision and/or at 6 months follow-up. Shared decision-making program scores were similar for the intervention and control group (71% and 70%, respectively; 95% confidence interval [CI] for 1% difference, -3% to 7%). The intervention group had higher knowledge scores (75% vs 62%; 95% CI for 13% difference, 8% to 18%). The intervention group chose to pursue revascularization less often (58% vs 75% for the controls; 95% CI for 17% difference, 4% to 31%). At 6 months, 52% of the intervention group and 66% of the controls had undergone revascularization (95% CI for 14% difference, 0% to 28%). General health and angina scores were not different between the groups at 6 months. Exposure to the IHD SDP resulted in more patient-angiographer disagreement about treatment decisions.
  
  
  CONCLUSIONS
  There was no significant difference in satisfaction with decision-making process scores between the IHD SDP and usual practice groups. The IHD SDP patients were more knowledgeable, underwent less revascularization (interventional therapies), and demonstrated increased patient decision-making autonomy without apparent impact on quality of life.
authors.affiliation: The Toronto Hospital and Sunnybrook Health Science Centre Units, University of Toronto, Ontario, Canada. matthew.morgan@uhn.on.ca
authors.forename: M W
authors.initials: MW
authors.lastname: Morgan
authors.forename: R B
authors.initials: RB
authors.lastname: Deber
authors.forename: H A
authors.initials: HA
authors.lastname: Llewellyn-Thomas
authors.forename: P
authors.initials: P
authors.lastname: Gladstone
authors.forename: R J
authors.initials: RJ
authors.lastname: Cusimano
authors.forename: K
authors.initials: K
authors.lastname: O'Rourke
authors.forename: G
authors.initials: G
authors.lastname: Tomlinson
authors.forename: A S
authors.initials: AS
authors.lastname: Detsky
mesh_terms: D016001:Confidence Intervals; D017023:Coronary Angiography; D003661:Decision Support Techniques; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000628:therapy*; D009864:Ontario; D017060:Patient Satisfaction; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires; D014742:Videodisc Recording