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. Author manuscript; available in PMC: 2020 Oct 2.
Published in final edited form as: Clin Trials. 2020 Jun 27;17(5):581–594. doi: 10.1177/1740774520931864

Table 3.

Recruitment by source in the randomized controlled trial (total n=585 randomized)

Recruitment tactic Number of randomized participants from this source Percentage of sample from this source
Online sources (i.e., website, Facebook, Trialspark) 146 25.48%
Press (TV, Newspaper, Magazine, etc…) 145 25.31%
Recruitment Letter 89 15.53%
Word of Mouth 79 13.79%
Flyer 47 8.20%
Other/unknown 37 6.46%
University-wide research registry 21 3.66%
Referred from different study 8 1.40%
Physician Referral 1 0.17%