add_in_observation

add_in_observation(
    table,
    cdm,
    *,
    index_date='cohort_start_date',
    window=(0, 0),
    complete_interval=False,
    name_style='in_observation',
)

Add column(s) indicating whether index_date is within observation and (optionally) within window.

window (0, 0) means just “in observation”; otherwise name_style may use {window_name}.

Parameters

Name	Type	Description	Default
table	Any	Ibis table with person_id or subject_id and index_date.	required
cdm	Cdm	CDM reference (observation_period).	required
index_date	str	Column name for index date (default “cohort_start_date”).	'cohort_start_date'
window	tuple	(low, high) days from index; (0, 0) means only “in observation”.	(0, 0)
complete_interval	bool	If True, require full window inside observation (default False).	False
name_style	str	Output column name (default “in_observation”).	'in_observation'

Returns

Name	Type	Description
	ibis.expr.types.Table	Table with in_observation (0/1) column.