Clinical research only moves as fast as its participants. More than 80% of global clinical trials fail to achieve their targeted enrollment—and even the most promising trial won’t change lives if enrollment lags, outreach falls flat, or trust never forms. We often talk about recruitment as a logistical or operational challenge, but more often than not, it’s a communications problem.
When messaging stalls, science often does too.
We’ve seen it across disease areas and study types: brilliant science paired with vague, jargon-heavy, or inaccessible messaging that dilutes the great work being done. Poor communication between healthcare professionals and prospective participants is identified as a key factor in decision-making about trial participation. Patients don’t understand what’s being asked of them, and physicians don’t feel confident referring eligible participants. If advocacy partners aren’t sure how to explain the study’s purpose, or why it matters right now, the insights gleaned from revolutionary research can never reach their full potential.
Approximately 80% of clinical trials report slow recruitment as a major obstacle, and enrollment delays frequently double the timeline of a study. In other words: communications play a foundational role in the success of clinical research. In the absence of clarity, confusion fills the gap, slowing everything down.
Clarity builds confidence.
Research shows that honest, clear communication is among the most effective strategies to improve recruitment and retention. The best recruitment materials don’t just inform; they build trust. They translate study design into human terms: what participation looks like, what safety measures are in place, and what the potential impact could be for patients, families, and the field at large. They address the fears people don’t always voice.
One qualitative study across three RCTs found that how recruiters communicated information significantly influenced patients’ decisions to enroll. When we communicate with precise, yet relatable language, we turn hesitancy into understanding—and that’s the first step toward participation.
Communication is infrastructure, and messaging is a recruitment strategy.
It’s easy to treat communication as the polish that comes after the science is done. But every word, visual, and explainer that helps patients, caregivers, and clinicians see themselves in a study is part of your recruitment plan. A clear message isn’t a luxury. It’s a strategy—one that can mean the difference between a stalled trial and a successful enrollment.
In fact, effective communication and stakeholder engagement are core recommendations from the Clinical Trials Transformation Initiative (CTTI) for improving recruitment outcomes. Community engagement, patient-centric materials, and accessible messaging have been shown to increase enrollment rates significantly (for example, ~20–30% uplift in particular settings).
That’s where we come in.
At Speaking of Science, we help research organizations, biopharma companies, and advocacy partners translate complex studies into messages that connect. We use accessible, actionable language to craft communication strategies that help science reach the people it’s meant to serve. Because when people understand your study, they’re more likely to join it. And when recruitment works, the science moves forward.
Don’t wait until enrollment is stalled to rethink messaging; build communication strategy from the start. Make communication a visible part of your trial infrastructure, just like site selection or budgeting. Speak in language your participants and referral networks understand. Translate benefits, processes, and risks clearly. Monitor messaging as part of the recruitment KPIs (not just site performance or logistics)—and never underestimate the power of plain, accessible language.
