'Call fast, Call 911': a direct mail campaign to reduce patient delay in acute myocardial infarction
H Meischke1, E M Dulberg, S S Schaeffer
1Center for Evaluation of Emergency Medical Services, Seattle-King County Department of Public Health, Wash. 98104-4039, USA.
Objectives:
A 10-month direct mail campaign was implemented to increase use of emergency medical services via 911 calls and to reduce prehospital delay for individuals experiencing acute myocardial infarction symptoms.
Methods:
This prospective, randomized, controlled trial involved three intervention groups (receiving brochures with informational, emotional, or social messages) and a control group.
Results:
Intervention effects were not observed except for individuals who had a history of acute myocardial infarction and who were discharged with a diagnosis of acute myocardial infarction; their 911 use was meaningfully higher in each intervention group than in the control group.
Conclusions:
The mailings affected only the individuals at greatest risk.
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