Physician referrals

Does outreach to referring physicians actually increase trial enrollment?

By TrialNotice · Updated
Research clinic coordinator in navy scrubs greeting a woman holding a referral envelope at the front desk
Short answerIt can, when outreach is study specific and sustained. A Phase 1 unit's memory clinic and physician engagement produced 98 referrals and 16 enrollments in one year, and a neurology site made community clinicians its top source of new patients. In contrast, a one time education effort aimed at primary care physicians recruited no patients in an Alzheimer's study. Structure is the difference.

What evidence shows physician outreach working?

A Phase 1 unit that opened a memory clinic and engaged community physicians received 98 referrals and enrolled 16 patients in 2017, and grew its referral network by 30 physicians within a 20 mile radius (Journal of Prevention of Alzheimer's Disease). A Connecticut neurology research site built a network over several years in which community clinicians became its top source of new patient referrals (Applied Clinical Trials).

What evidence shows it failing?

In a study comparing two approaches for Alzheimer's trials, an intervention aimed at primary care physicians recruited no research subjects, while a community outreach event aimed at patients and families recruited 69 (PubMed). That result is worth taking seriously. It shows that a single round of physician education, on its own, does not move enrollment.

What separates outreach that works?

  • It is about one active study. Physicians name missing study information and time as the main reasons they do not refer (Tufts CSDD). General awareness does not solve that. A specific study with specific criteria does.
  • It targets physicians near the site. Proximity to a research center raised the odds of being a likely referrer about fourfold in one physician survey (PubMed).
  • It continues. The successful cases built relationships over months and years. The failed one was a single intervention.
  • It closes the loop. Nearly 30% of physicians never hear back after referring (Tufts CSDD), and most do not refer twice to a site that goes silent.

How large is the upside?

Physicians refer less than 0.2% of their patients into trials (Getz), so there is a lot of room. And patients respond when asked: in oncology, 55% of nearly 10,000 patients agreed to join a trial when one was offered (Healio, summarizing Unger et al.).

How should a site measure it?

Track referrals, screens, and randomizations by referring physician, and track engagement before referrals arrive, such as QR scans and replies. That shows which practices are warming up and where to focus follow up. See how to calculate recruitment ROI.

Get your study in front of the right local physicians

TrialNotice builds a physician referral pipeline around one active study. We identify relevant local physicians within driving distance of your site, send study aligned direct mail, follow up by email and LinkedIn, track engagement with recipient level QR codes, and route warm responses into your site team's workflow.

Talk to TrialNotice

Sources

  1. Journal of Prevention of Alzheimer's Disease abstract on a memory clinic within a Phase 1 unit
  2. Applied Clinical Trials, "Building a Physician Referral Network: A Case Study"
  3. "Comparison of recruitment efforts targeted at primary care physicians versus the community at large for participation in Alzheimer disease clinical trials," PubMed
  4. "Predictors of physician referral for patient recruitment to Alzheimer disease clinical trials," Alzheimer Disease and Associated Disorders, PubMed
  5. Applied Clinical Trials, "Tufts CSDD Study Explores Low Recruitment Rates"
  6. Ken Getz, Applied Clinical Trials, "Rebooting the Statistic That 5% of Eligible Patients Participate in Clinical Trials"
  7. Healio, "More than 20% of patients participate in cancer research" (summary of Unger et al.)

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