> ## 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.

# Gender-based eligibility

Whether someone can join a study based on their self-identified gender, which may differ from their biological sex.

## Related terms

<CardGroup cols={3}>
  <Card title="Principal investigator (PI)" href="principal_investigator_pi" />
</CardGroup>

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