'Call fast, Call 911': a direct mail campaign to reduce patient delay in acute myocardial infarction

Am J Public Health. 1997 Oct;87(10):1705-9. doi: 10.2105/ajph.87.10.1705.


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.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Emergency Medical Services / statistics & numerical data*
  • Female
  • Health Promotion / methods*
  • Humans
  • Male
  • Middle Aged
  • Myocardial Infarction* / psychology
  • Myocardial Infarction* / therapy
  • Pamphlets*
  • Patient Acceptance of Health Care*
  • Postal Service
  • Prospective Studies
  • Registries
  • Time Factors
  • Washington