Table 5.

Questions and Responses Used to Construct Estimates of Adult Current Cigarette Smoking for the PATH Study, TUS-CPS, NHIS, NHANES, and NSDUH

Study	Current cigarette smoking
PATH Study	YES: “Do you now smoke cigarettes every day, some days, or not at all?” (every day, some days) and for any completed youth or adult interview “How many cigarettes have you smoked in your entire life? A pack usually has 20 cigarettes in it” (100 or more cigarettes) NO: [If first interview “Have you ever smoked a cigarette, 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)] or “Do you now smoke cigarettes every day, some days, or not at all?” (not at all) or “How many cigarettes have you smoked in your entire life? A pack usually has 20 cigarettes in it” (1 or more puffs but never a whole cigarette, 1 to 10 cigarettes, 11 to 20 cigarettes, 21 to 50 cigarettes, 51 to 99 cigarettes)
TUS-CPS	YES: “Have you smoked at least 100 cigarettes in your entire life?” (yes) and “Do you now smoke cigarettes every day, some days, or not at all?” (every day, some days) NO: “Have you smoked at least 100 cigarettes in your entire life?” (no) or “Do you now smoke cigarettes every day, some days, or not at all?” (not at all)
NHIS	YES: “Have you smoked at least 100 cigarettes in your ENTIRE LIFE?” (yes) and “Do you NOW smoke cigarettes every day, some days or not at all?” (every day, some days) NO: “Have you smoked at least 100 cigarettes in your ENTIRE LIFE?” (no) or “Do you NOW smoke cigarettes every day, some days or not at all?” (not at all)
NHANES	YES: “{Have you/Has SP} smoked at least 100 cigarettes in {your/his/her} entire life?” (yes) and “{Do you/Does SP} now smoke cigarettes every day, some days, or not at all?” (every day, some days) NO: “{Have you/Has SP} smoked at least 100 cigarettes in {your/his/her} entire life?” (no) or “{Do you/Does SP} now smoke cigarettes every day, some days, or not at all?” (not at all)
NSDUH	YES: “Have you ever smoked part or all of a cigarette?” (yes) and ‘Time since last smoked cigarettes’ (within the past 30 days) and “Have you smoked at least 100 cigarettes in your entire life?” (yes) 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, more than 12 months ago, more than 30 days ago, more than 30 days ago but in the past 3 years) or “Have you smoked at least 100 cigarettes in your entire life?” (no)