{
  "$schema": "https://frictionlessdata.io/schemas/table-schema.json",
  "$id": "https://raw.githubusercontent.com/tscnlab/glc-metadata-validator/main/schemas/3.0.2/participant_characteristics.schema.json",
  "version": "3.0.2",
  "fields": [
    {
      "name": "participant_internal_id",
      "type": "string",
      "description": "Linked participant ID",
      "example": "EXAMPLE_P001"
    },
    {
      "name": "participant_characteristic_name",
      "type": "string",
      "description": "Name of the participant characteristic",
      "example": "chronotype"
    },
    {
      "name": "participant_characteristic_value",
      "type": "string",
      "description": "Value of the participant characteristic",
      "example": "intermediate"
    },
    {
      "name": "participant_characteristic_unit",
      "type": "string",
      "description": "Optional unit of the characteristic value. Leave blank for unitless scores or categorical values."
    },
    {
      "name": "participant_characteristic_description",
      "type": "string",
      "description": "Additional notes or description",
      "example": "Self-reported chronotype category."
    }
  ],
  "primaryKey": [
    "participant_internal_id",
    "participant_characteristic_name"
  ],
  "foreignKeys": [
    {
      "fields": "participant_internal_id",
      "reference": {
        "resource": "participants",
        "fields": "participant_internal_id"
      }
    }
  ]
}