Sites are not free capacity

A site that opens slowly or enrolls almost nobody can cost more than it contributes.

Work backward from recruitment

Estimate eligible patients per site per month under this exact protocol. Then calculate how many credible sites are needed to hit the enrollment window.

Stage activation when uncertainty is high

Opening a smaller high-confidence cohort first can reveal whether enrollment assumptions are real before you pay to activate the full network.

Questions people actually ask

FAQ

Is 20 sites better than 10?

Only if the additional sites enroll enough patients to justify their startup and monitoring burden.

When should I close a site?

Predefine a milestone or kill date for low-enrolling sites rather than letting them remain active indefinitely.

Related

Clinical Trial Site Feasibility: Questions That Actually MatterThe best feasibility questions test whether a site can execute this exact protocol and enroll this exact population. How to Build a Clinical Trial Enrollment Forecast That Is Not FictionEnrollment forecasts fail when they multiply optimistic site estimates by the number of sites. Build the forecast from protocol-specific evidence. Clinical Trial Cost Breakdown: What Actually Drives the Budget?A trial budget is a stack of patient, site, vendor, geography and time costs. The fastest way to understand it is to make every bucket explicit.

Do the useful thing now

Use the tool instead of guessing.

Calculate sites versus enrollment time