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Summary
This summary is machine-generated.

Social media and postcard advertisements effectively increased enrollment in the Consent-to-Contact (C2C) registry. Both methods showed immediate and significant boosts in recruitment rates from disadvantaged neighborhoods.

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Area of Science:

  • Public Health
  • Biomedical Research Recruitment
  • Health Disparities

Background:

  • Disadvantaged neighborhoods often have lower participation in research studies.
  • Effective recruitment strategies are crucial for diverse and representative participant pools.
  • The Consent-to-Contact (C2C) registry at UC Irvine (UCI) aims to connect individuals with research opportunities.

Purpose of the Study:

  • To assess the effectiveness of social media and mailed postcard advertisements in recruiting individuals from disadvantaged neighborhoods in Orange County, California.
  • To quantify the impact of these interventions on Consent-to-Contact (C2C) registry enrollment rates.

Main Methods:

  • An interrupted time series design experiment was employed.
  • Advertisements were delivered via Facebook/Instagram and traditional mail (postcards).
  • Enrollment was measured at email and full enrollment levels using interrupted time series analysis to estimate intervention impact.

Main Results:

  • Social media ads resulted in an enrollment rate of 5.41 per 10,000 individuals post-intervention (0 pre-intervention).
  • Postcard mailings resulted in an enrollment rate of 6.16 per 10,000 individuals post-intervention (0.22 pre-intervention).
  • The postcard intervention showed a 19-fold increase in enrollment rate at the estimated change point.

Conclusions:

  • Social media advertisements led to immediate enrollments in the C2C registry.
  • Mailed postcard interventions also demonstrated a timely impact on C2C enrollment.
  • These findings offer valuable insights into optimizing recruitment strategies for research registries, particularly in underserved communities.