> ## Documentation Index
> Fetch the complete documentation index at: https://vital-mintlify-bf22bd70.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# historical.data.forced_expiratory_volume_1.created

> Fired when a new historical backfill forced expiratory volume in one second (FEV1) record is created for a user from a connected provider.