PENNANTFree reporting selector
Choose the time lens that matches the enrollment question.
Answer five decision questions to determine whether period reporting, cohort reporting, or both should lead the analysis.
The distinction
Period reporting groups events by when they happen. Cohort reporting follows a defined entry population over time.
Neither is universally better. The correct lens depends on the decision being made.
How the selector decides
Each answer contributes to the period or cohort use case. A close result recommends both views because many enrollment decisions require current production and mature acquisition-quality context.
Read the complete period-versus-cohort guide →