Table 4.

Questions and Responses Used to Construct Estimates of Youth Cigarette Smoking for the PATH Study, NHANES, NSDUH, and NYTS

Study	Ever tried cigarette smoking	Smoked cigarettes in past 30 days
PATH Study	YES: “Have you ever tried cigarette smoking, even one or two puffs?” (first interview, yes) or for any follow-up interview “In the past 12 months, have you smoked a cigarette, even one or two puffs?” (yes) NO: “Have you ever tried cigarette smoking, even one or two puffs?” (first interview, no) and for every follow-up interview “In the past 12 months, have you smoked a cigarette, even one or two puffs?” (no)	YES: “When was the last time you smoked a cigarette, even one or two puffs?” (earlier today, not today but sometime in the past 7 days, not in the past 7 days but sometime in the past 30 days) NO: {If first interview “Have you ever tried cigarette smoking, even one or two puffs?” (no) or if follow-up interview [“In the past 12 months, have you smoked a cigarette, even one or two puffs?” (no) and criterion for YES not meta]} or “When was the last time you smoked a cigarette, even one or two puffs?” (not in the past 30 days but sometime in the past 6 months, not in the past 6 months but sometime in the past year, 1 to 4 years ago, 5 or more years ago)
NHANES	YES: “About how many cigarettes have you smoked in your entire life?” (1 or more puffs but never a whole cigarette, 1 cigarette, 2 to 5 cigarettes, 6 to 15 cigarettes, 16 to 25 cigarettes, 26 to 99 cigarettes, 100 or more cigarettes) NO: “About how many cigarettes have you smoked in your entire life?” (I have never smoked – not even a puff)	YES: “During the past 30 days, on how many of the past 30 days did you smoke cigarettes?” (1-30) NO: “During the past 30 days, on how many of the past 30 days did you smoke cigarettes?” (0) or “About how many cigarettes have you smoked in your entire life?” (I have never smoked – not even a puff, 1 or more puffs but never a whole cigaretteb)
	YES: “Have you ever smoked part or all of a cigarette?” (yes) NO: “Have you ever smoked part or all of a cigarette?” (no)	YES: “Have you ever smoked part or all of a cigarette?” (yes) and [‘Time since last smoked cigarettes’ (within the past 30 days) or “During the past 30 days, that is since DATEFILL, on how many days did you smoke part or all of a cigarette?” (1-30) or “What is your best estimate of the number of days you smoked part or all of a cigarette during the past 30 days?” (1 or 2 days, 3 to 5 days, 6 to 9 days, 10 to 19 days, 20 to 29 days, all 30 days)]
NSDUH		NO: “Have you ever smoked part or all of a cigarette?” (no) or ‘Time since last smoked cigarettes’ (more than 30 days ago but within the past 12 months, more than 12 months ago but within the past 3 years, more than 3 years ago, used more than 12 months ago, used more than 30 days ago, used more than 30 days ago but in past 3 years) or [“During the past 30 days, that is since DATEFILL, on how many days did you smoke part or all of a cigarette?” (never used cigarettes, did not use cigarettes in the past 30 days) and “What is your best estimate of the number of days you smoked part or all of a cigarette during the past 30 days?” (never used cigarettes, did not use cigarettes in the past 30 days)]
NYTS	YES: “Have you ever tried cigarette smoking, even one or two puffs?” (yes) NO: “Have you ever tried cigarette smoking, even one or two puffs?” (no)	YES: “During the past 30 days, on how many days did you smoke cigarettes?” (1 or 2 days, 3 to 5 days, 6 to 9 days, 10 to 19 days, 20 to 29 days, all 30 days) NO: “During the past 30 days, on how many days did you smoke cigarettes?” (0 days)

Note.

^aIn Waves 2 and 3, youth completing a follow-up interview who reported not smoking a cigarette in the past 12 months, but who had previously reported ever trying a cigarette, were asked when the last time was that they had smoked a cigarette. Some of these youth reported smoking in the past 30 days, and so were included in the “yes” category.

^bFor NHANES, youth who had taken one or more puffs but never smoked a whole cigarette were not asked on how many of the past 30 days they had smoked a cigarette, and so were included in the “no” category.