> ## Documentation Index
> Fetch the complete documentation index at: https://glossary.micahealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Observational study model

The overall plan for how researchers identify and follow participants in an observational study, including designs like cohort, case-control, case-only, case-cross-over, community studies, and family-based studies.

## Related terms

<CardGroup cols={3}>
  <Card title="Primary outcome measure" href="primary_outcome_measure" />

  <Card title="Protocol" href="protocol" />
</CardGroup>

[*Source*](https://clinicaltrials.gov/study-basics/glossary)