Enrollment Behind Plan? Diagnose the Constraint Before You Scale the Response.

Determine whether the study needs more candidate supply — or better conversion from the patients it already has.

“Enrollment is behind” could mean:

not enough candidates,

poor match quality,

high screen failure,

slow site response,

missing eligibility evidence,

participant burden,

consent friction.

Those require different interventions.

Map:

identified → contacted → pre-screened → consented → screened → randomized

Then find:

largest drop,

longest wait,

highest manual burden,

most preventable failure.

Know the Constraint?

Now calculate what it costs.