Skip to main content

Table 2 Verification of the Poisson assumptions in the trial recruitment context

From: Concept and development of an interactive tool for trial recruitment planning and management

Assumption

Trial recruitment context

Assumption holds

Events taking place during one interval do not affect the next

Each recruitment is independent of the next

Yes

Events take place one at a time

Patients are recruited individually, and recruitment data is recorded one at a time

Yes

The average rate of events remains constant

The assumption has been challenged by Williford et al. [27], but numerous other sources support the assumption [26, 28, 29]

Yes