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Health Expect. 1998 Jun;1(1):50-61.

A randomized controlled trial of information-giving to patients referred for coronary angiography: effects on outcomes of care.

Author information

1
Department of Internal Medicine, University of Michigan, Ann Arbor, USA; Department of Health Management and Policy, University of Michigan, Ann Arbor, USA; Veterans Affairs Medical Center, Ann Arbor, Michigan, USA; Gerontology Program, Bowling Green State University, Bowling Green, Ohio USA; Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA.

Abstract

OBJECTIVE:

To assess the impact of providing an educational videotape, 'Treatment Choices for Ischaemic Heart Disease: a Shared Decision-Making Program Videotape,' to patients referred for coronary angiography compared with standard patient-physician decision making (usual care).

STUDY DESIGN:

Randomized controlled clinical trial.

SETTING:

University Hospital and Veterans Affairs Hospital.

PATIENTS:

A consecutive sample of 217 patients referred for coronary angiography were randomized to receive 'usual care' or to receive the videotape in addition to standard patient physician decision making (videotape): 109 completed the study (50% completion rate).

MAIN OUTCOME MEASURES:

Knowledge of coronary artery disease, satisfaction, self-reported physical and mental health functioning, and the proportion of patients who were referred for coronary revascularization.

RESULTS:

Compared with patients who received 'usual care,' those who received the videotape were more knowledgeable (mean score 83 vs. 58%; P < 0.0001) but less satisfied with their treatment (79 vs. 88%; P = 0.038). There were no significant differences between the videotape and 'usual care' groups with respect to satisfaction with the decision making process (mean score 73 vs. 77%; P = 0.37), satisfaction with the decision made (mean score 73 vs. 78%; P = 0.28), physical functioning (38 vs. 38%; P = 0.76), mental health functioning (49 vs. 49%; P = 0.94), or in referral for coronary revascularization (OR 0.60; 95% CI 0.22-1.65; P = 0.33).

CONCLUSION:

Although the educational videotape increased patients' knowledge level, it was associated with a decrease in their level of satisfaction with treatment. Before there is wide-spread dissemination of this technology, advocates should demonstrate its effectiveness in everyday practice.

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