Slot: Age at First Participant Engagement (age_at_first_engagement)

Age in days of Participant at first recorded study event (enrollment, visit, observation, sample collection, survey completion, etc.). Age at enrollment is preferred, if available.

URI: [includedcc:age_at_first_engagement](https://includedcc.org/include-access-model/age_at_first_engagement) ## Applicable Classes | Name | Description | Modifies Slot | | --- | --- | --- | | [Demographics](Demographics.md) | Basic participant demographics summary | no | | [IncludeParticipant](IncludeParticipant.md) | Information specific to INCLUDE participants | no | ## Properties ### Type and Range | Property | Value | | --- | --- | | Range | [Integer](Integer.md) | | Domain Of | [Demographics](Demographics.md) | ### Cardinality and Requirements | Property | Value | | --- | --- | ### Value Constraints | Property | Value | | --- | --- | | Minimum Value | -365 | | Maximum Value | 32507 |

Additional Constraints

**Unit:** | Property | Value | | --- | --- | | ucum_code | d |

## Identifier and Mapping Information ### Schema Source * from schema: https://includedcc.org/include-access-model ## Mappings | Mapping Type | Mapped Value | | --- | --- | | self | includedcc:age_at_first_engagement | | native | includedcc:age_at_first_engagement | ## LinkML Source

name: age_at_first_engagement
description: Age in days of Participant at first recorded study event (enrollment,
  visit, observation, sample collection, survey completion, etc.). Age at enrollment
  is preferred, if available.
title: Age at First Participant Engagement
from_schema: https://includedcc.org/include-access-model
rank: 1000
domain_of:
- Demographics
range: integer
minimum_value: -365
maximum_value: 32507
unit:
  ucum_code: d