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Related Experiment Videos

Recruiting phobic research subjects: effectiveness and cost.

T Kaakko1, H Murtomaa, P Milgrom

  • 1Department of Dental Public Health Sciences, University of Washington, Seattle, 98195-7475, USA. kaakko@u.washington.edu

Anesthesia Progress
|August 10, 2001
PubMed
Summary

Paid advertising, particularly bus and campus posters, proved most effective for recruiting dental injection phobics in a clinical trial. This strategy yielded the highest enrollment numbers and initial contacts for the study.

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Area of Science:

  • Clinical Psychology
  • Medical Research Methodology

Background:

  • Subject recruitment is a critical challenge in clinical trials.
  • Dental injection phobia affects a significant population, necessitating effective treatment studies.

Purpose of the Study:

  • To evaluate the efficacy of different recruitment strategies for a clinical trial on dental injection phobia.
  • To determine the most cost-effective methods for enrolling participants.

Main Methods:

  • A prospective study involving 144 participants with dental injection phobia.
  • Comparison of three recruitment strategies: paid advertising, free publicity, and professional referral.
  • Analysis of enrollment numbers, initial contacts, and cost per subject.

Main Results:

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  • Paid advertising enrolled 63% of subjects, with bus advertisements (27.0%), campus posters (20.1%), and newspaper ads (13.2%) being most successful.
  • Free publicity accounted for 18.8% and professional referrals for 14.6% of enrollments.
  • The average cost per subject enrolled was $79 (1996 dollars).

Conclusions:

  • Paid advertising, especially bus and poster advertisements, is highly effective for recruiting participants with dental injection phobia.
  • Targeted paid advertising strategies can significantly improve clinical trial enrollment rates.
  • Understanding recruitment dynamics is crucial for efficient clinical trial management.