Improving Care After Myocardial Infarction Using a 2-year Internet-delivered Intervention: the Department of Veterans Affairs Myocardial Infarction-plus Cluster-randomized Trial

Overview

Journal Arch Intern Med

Specialty General Medicine

Date 2011 Nov 30

PMID 22123798

Citations 16

Authors

Deborah A Levine

Ellen M Funkhouser

Thomas K Houston

Joe K Gerald

Nancy Johnson-Roe

Jeroan J Allison

Joshua Richman

Catarina I Kiefe

Affiliations

Soon will be listed here.

Abstract

Background: Cardiovascular risk reduction in ambulatory patients who survive myocardial infarction (MI) is effective but underused. We sought to evaluate a provider-directed, Internet-delivered intervention to improve cardiovascular management for post-MI outpatients.

Methods: The Department of Veterans Affairs (VA) MI-Plus study was a cluster-randomized trial involving 168 community-based primary care clinics and 847 providers in 26 states, the Virgin Islands, and Puerto Rico, from January 1, 2002, through December 31, 2008, with the clinic as the randomization unit. We collected administrative data for 15,847 post-MI patients and medical record data for 10,452 of these. A multicomponent, Internet-delivered intervention included quarterly educational modules, practice guidelines, monthly literature summaries, and automated e-mail reminders delivered to providers for 27 months. Main outcome measures included percentage of patients who achieved each of 7 clinical indicators, a composite score of the 7 clinical indicators, and mean low-density lipoprotein cholesterol and hemoglobin A(1c) levels.

Results: Clinics had a median of 3 providers (interquartile range, 2-6), with a median of 50.0% of providers (33.3%-66.7%) participating in the study. Patients in intervention clinics had greater improvements (from 70.0% to 85.5%) in the percentages prescribed β-blockers than patients in control clinics (71.9% to 84.0%; adjusted improvement gain for intervention vs control, 2.6%; 95% CI, 0.1%-4.1%). We found nonsignificant differences in improvements favoring patients in intervention clinics for 5 of 6 remaining clinical indicators and levels of low-density lipoprotein cholesterol and hemoglobin A(1c).

Conclusion: A longitudinal, Internet-delivered intervention improved only 1 of 7 clinical indicators of cardiovascular management in ambulatory post-MI patients.

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