Working with recruitment partners in decentralised trials

Recruitment is one of the most consistent challenges in decentralised trials. When studies move away from site-based enrolment, the responsibility for finding and reaching participants shifts. Recruitment partners fill much of that gap, but working with them effectively requires more thought than simply handing over the brief and waiting for referrals.

What recruitment partners actually do (and what they do not)

The range of services varies considerably across vendors:

• Some focus purely on generating traffic to a screening tool
• Others handle pre-screening and deliver partially qualified candidates
• Some provide direct participant support through phone or chat
• A few integrate directly with study systems and manage the full referral journey

Before signing anything, clarify what you are actually buying:

• Are they generating leads, qualifying participants, or both?
• Who handles the initial contact, your team or theirs?
• How does participant data transfer to your systems?
• What happens when a participant asks a question, changes their mind, or gives an ambiguous response?

These questions prevent the kind of confusion that tends to surface after enrolment has started, not before.

The handoff is where most problems happen

The transition from recruitment screening to study enrolment is the point of highest dropout risk. When a participant completes a screener and hears nothing for 48 hours, momentum is lost. Many never come back.

Good handoffs typically share a few characteristics:

• Immediate confirmation of eligibility with clear next-step instructions
• A booking link or direct action they can take straight away
• Visual and tonal consistency between the screener and the study experience they are entering
• A named contact or support channel if they have questions

The dropout here is not usually about the study itself. It is about the gap between "I completed the screener" and "I felt welcomed into the study."

Automating the right things

Automation can preserve momentum without removing the human element:

• Automatic routing to an appointment booking page after screening approval
• Eligibility confirmations with a brief explanation of what happens next
• Immediate dashboard or app access so participants feel they have already joined

What automation should not do is replace the conversations that actually matter: explaining the study, answering concerns, and helping someone decide whether this is right for them.

Metrics worth tracking

Enrolment numbers tell you how many participants you have. They do not tell you where the process is leaking. More useful to track:

• Screener completion-to-booking conversion rate
• Average time between referral and first contact
• Dropout between eligibility confirmation and first study task
• Which stages involve manual steps that slow things down

Small improvements at a bottleneck often matter more than increasing the volume at the top of the funnel.

Choosing the right partner

Experience with your population and study type matters more than scale. Ask:

• Have they worked with similar demographics or delivery models before?
• Do they integrate with your study systems, or do they work around them?
• Can they share dropout rates and conversion data from comparable projects, not just enrolment headlines?

The best partnerships are ones where both parties care about the participant experience, not just the pipeline.