Measurement to ascertain when the respondent quit smoking. Response is used to calculate duration of use and pack-years measures and allows one to distinguish recent quitters from long-time quitters. Respondent is asked how long it has been since he or she smoked and how old he or she was when he or she last smoked only if he or she answered "yes" to the first question of the Tobacco - Smoking Status (Adolescent Protocol).
status
DISCOURAGED
Fully-Specified Name
component
PhenX - tobacco - age of offset use - adolescent protocol 030901
property
-
time
Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
system
^Patient
scale
-
method
PhenX
Additional Names
short name
Pan; Panel; PANEL.PHENX; Panl; Pnl; Point in time; Random; Tobac age offset adoles proto
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