# DAYS SMOKED PAST 30 DAYS
THE NEXT THREE QUESTIONS REFER
TO THE PAST 30 DAYS ONLY.
C-5. Think specifically about the past
30 days--that is, from your 30-day
reference date up to and including
today. During the past 30 days, on how
many days did you smoke a cigarette?
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Taken from: National Household Survey on Drug Abuse, 1998.