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Default variables

Some Lifelines variables are provided by default in every issued dataset (section: demographics).
Note that these variables are not visible in the data-catalogue.

The following variables are provided by default for each participant in the Global Summary table:

Default Variable	Label
PROJECT_PSEUDO_ID	Project-specific pseudonym
DATE_OF_BIRTH	Date of birth (month/year)
DATE_OF_INCLUSION	Date of inclusion (month/year)
DATE_OF_DEATH	Date of death (month/year)
SOURCE	Way of inclusion
INV_[element]	Date on which participant received the first invitation to participate in [element] (month/year) / 1 variable for each element in your dataset
INT_[element]	Time interval between the element and date of inclusion (in months) / 1 variable for each element in your dataset
AGE_[element]	Age on the day of the element (in months) / 1 variable for each element in your dataset

The following variables are provided by default for each participant in each results table in your dataset (organized per element)

Default variable	Label
PROJECT_PSEUDO_ID	Project-specific pseudonym
VARIANT_ID	Variant of the element
DATE	Date of the element (month/year)
AGE	Age on the date of element (years)
GENDER	Gender on the date of element
ZIP_CODE	Home zip code (PC4) on the date of element

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