Smoking status incl. smoking cessation Rx
Name smoking_status_composite
Chapter Health Behaviour/Smoking
Recorded smoking status of patient at specific point in time, including prescription of smoking cessation products. Patients with a prescription of smoking cessation medication are classified as "Current smokers"
Data Type Categorical
Data sources GPRD
Repeated Yes
Valid event date range 01/01/1900 - 25/03/2010
Agreed 02.03.2011 (Revision 1)
Category Definition
1 Non smoker
2 Ex smoker
3 Ever smoker
4 Current smoker
IF smoking_status not missing, smoking_status_comp = smoking_status code, 

ELSE IF BNF4.10.2, THEN smoking_status_composite = 4 [current]
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