Clinical study start-up three-point PERT
This three-point PERT chart estimates clinical study start-up while exposing uncertainty in regulatory review and site activation. A draft protocol begins ethics review and site selection. Selected sites are contracted, then training waits for both the ethics decision and signed site contracts. Enrollment opens only after training. Optimistic, likely and pessimistic durations give the team a way to plan around review timing and contract variability without treating them as fixed. Extend the network with budget approval, investigator meetings, data-system validation or drug supply release when those steps affect study activation.
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Scenario
A study team estimates regulatory and site-activation uncertainty.
Key decisions
- Protocol gate: Ethics and site selection begin after the draft.
- Site gate: Contracting follows selection.
- Activation gate: Training needs ethics approval and contracts.
When to reuse this
Use for an early clinical study plan.
Frequently asked questions
Why use three-point estimates?
What blocks training?
When does enrollment open?
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