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Caffeine History

Caffeine History - Variable Definition Table:

Field Name

Description

Field Values

Variable Summary
caff_drinks_ever_used_regularly Caffeine Exposure No
Unknown
Yes		 Indicator of whether subject has evere used caffeinated drinks
caff_drinks_current_use Caffeine Exposure No
Unknown
Yes		 Current regular caffeinated drinks use indicator


Tables that Reference this Variable:

  • Caffeine_history
     

Data Type Information:
 

Field Name

Type

Mode
caff_drinks_ever_used_regularly ENUMERATION NULLABLE
caff_drinks_current_use ENUMERATION NULLABLE


Curation Notations:

Query Definition
Caffeine_history.caff_drinks_ever_used_regularly is not null AND Caffeine_history.caff_drinks_ever_used_regularly != 'Unknown'

Clinical Data Forms Queried (available as a BigQuery Table and csv File)
Caffeine_history

Criteria
caff_drinks_ever_used_regularly is not null
caff_drinks_ever_used_regularly != 'Unknown'
AND

Query
SELECT left(participant_id, 2) Cohort, count(distinct participant_id) Count from `amp-pd-research.2021_v2_5release_0510.Caffeine_history` WHERE caff_drinks_ever_used_regularly is not null AND caff_drinks_ever_used_regularly != 'Unknown' GROUP BY Cohort ORDER BY Cohort