add_age

add_age(
    table,
    cdm,
    *,
    index_date='cohort_start_date',
    age_name='age',
    age_group=None,
    age_missing_month=1,
    age_missing_day=1,
    age_impose_month=False,
    age_impose_day=False,
    missing_age_group_value='None',
)

Add age at index_date (and optional age groups).

Parameters

Name	Type	Description	Default
table	Any	Ibis table with person_id or subject_id and index_date column.	required
cdm	Cdm	CDM reference (person).	required
index_date	str	Column name for index date (default “cohort_start_date”).	'cohort_start_date'
age_name	str	Output column name (default “age”).	'age'
age_group	list or None	Optional age groups (col_name, (low, high)) or (col_name, label, (low, high)).	None
age_missing_month	int	Default month/day when missing.	1
age_missing_day	int	Default month/day when missing.	1
age_impose_month	bool	Force default month/day.	False
age_impose_day	bool	Force default month/day.	False
missing_age_group_value	str	Value for missing/unknown group.	'None'

Returns

Name	Type	Description
	ibis.expr.types.Table	Table with age (and optional age_group) columns.