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. 2024 Feb 28;25:150. doi: 10.1186/s13063-024-07988-z

Table 2.

Sources of potential participant referrals screened at tier 1

Source of referral DQ1 PCC referral Source total Success ratio
A current PISCES III study clinic 10 9 19 0.47
Another doctor or rehabilitation specialist or institution 125 44 171 0.26
Facebook, Instagram, or other social media 1877 541 2397 0.23
Hospital or rehabilitation website 97 29 126 0.23
Radio ad 27 7 34 0.21
Google or other search engine 1425 305 1761 0.17
Newspaper or print flyer 11 2 13 0.15
ClinicalTrials.gov 13 2 15 0.13
TV ad 333 47 380 0.12
Friend or family referral 129 15 144 0.10

DQ1 disqualified by tier 1 survey, PCC primary central screening center (tier 2). Source total is the total number of referrals attributed to the source; Success ratio is the number of enrolled participants attributed to that source divided by the Source total