Instrument Variable Name: MDTOB1A
Question Text:

[fill1: These questions are about tobacco use.]
In the PAST 12 MONTHS, has a medical doctor, dentist, or other health professional ASKED you about whether you smoke cigarettes or use other kinds of tobacco?

1 Yes
2 No
3 Did not see a doctor in the past 12 months
7 Refused
9 Don't know

Universe Text: Sample adults 18+ who have seen a doctor or other health care professional in the past year
Skip Instructions:

(1,R,D) if SMKNOW=1,2 or SMKNOW=3 and SMKQTNO and SMKQTTP LE 1 year ago [goto MDTOB2]; else [goto PIPEEV] (2) [goto MDTOB1B] (3) [goto PIPEEV]

Instrument Variable Name: MDTOB1B
Question Text:

Was this because the doctor, dentist, or other health professional already knew whether or not you smoke or use tobacco?

1 Yes
2 No
3 Varies from doctor to doctor
7 Refused
9 Don't know

Universe Text: Sample adults 18+ whose doctor did not ask them about smoking habits in the past 12 months
Skip Instructions:

(1,2,3,R,D) if SMKNOW=1,2 or SMKNOW=3 and SMKQTNO and SMKQTTP LE 1 year ago [goto MDTOB2]; else [goto PIPEEV]