for people ages 21 years and up (full criteria)
at San Francisco, California and other locations
study started
estimated completion
Principal Investigator
by Linda Park, PhD
Headshot of Linda Park
Linda Park



The purpose of this study is to determine whether text messages/messaging (TM) or a mobile application (app), compared with an educational website-control provided to all Veterans, can improve adherence to antiplatelet therapy among patients following acute coronary syndrome or percutaneous coronary intervention (ACS/PCI).

Official Title

Mobile Health Strategies for Veterans With Coronary Heart Disease


Adherence to antiplatelet medications is critical to prevent life threatening complications (i.e., stent thrombosis); yet rates of non-adherence range from 21-57% by 12 months. Mobile technology through TM or mobile apps is a practical and inexpensive strategy to promote behavior change and enhance medication adherence. The three specific aims of this proposal are to: 1) determine preferences for content and frequency of TM to promote medication adherence through focus groups; 2) determine the most patient-centered app to promote adherence through a content analysis of all commercially available apps for medication adherence and focus groups centered on usability; and 3) compare adherence to antiplatelet medications in 225 Veterans post ACS/PCI through a randomized controlled trial. Participants will be randomized to either TM, mobile app, or website-control group. The focus groups will be stratified by low/high mobile phone use and sex.


Coronary Heart Disease, mobile health, veterans, cardiovascular disease, medication adherence, Heart Diseases, Coronary Disease, Coronary Artery Disease, Myocardial Ischemia, Text Message, Mobile Application, Website


You can join if…

Open to people ages 21 years and up

  • ≥ 21 years of age,
  • recent ACS or PCI within 1 week
  • new antiplatelet (thienopyridine) prescription
  • owns a smartphone

You CAN'T join if...

  • cognitive impairment
  • lack of English proficiency/literacy


  • San Francisco Veterans Affairs Medical Center accepting new patients
    San Francisco California 94121 United States
  • John Muir Medical Center accepting new patients
    Concord California 94520 United States
  • VA Palo Alto Health Care System accepting new patients
    Palo Alto California 94304 United States

Lead Scientist at UCSF

  • Linda Park, PhD
    Dr. Park's program of research focuses on the secondary prevention of cardiovascular disease. Her current research projects center around determining the most engaging, practical, and meaningful technology-based interventions to improve patient self-care, clinical outcomes, and quality of life for patients with ischemic heart disease and heart failure.


accepting new patients
Start Date
Completion Date
San Francisco Veterans Affairs Medical Center
Study Type
Expecting 225 study participants
Last Updated