Measurement to ascertain the respondent's age of initiation of first/regular use of cigarettes, which can be used to calculate duration of use and pack-years measures. The PhenX Working Group modified the Adult Protocol to provide a more precise measure. The original wording of "fairly regularly" was changed to "every day." There are two questions in this protocol. Current Every-Day Smokers (based on responses to the Tobacco - Smoking Status [Adult Protocol]) are asked the age when they initiated smoking every day. Current Some-Day Smokers and Former Smokers (based on responses to the Tobacco - Smoking Status [Adult Protocol]) are asked the second question about the age when they initiated smoking fairly regularly. Participant's age in years is recorded.
status
DISCOURAGED
Fully-Specified Name
component
PhenX - tobacco - 30D quantity and frequency - adult protocol 030802
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; Tobacco 30D quant freq adult proto
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