1997 National Household Survey on Drug Abuse

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Heavy Cigarette Use (Table 8.6)


20 The estimates for "less than a pack a day" and "a pack or more a day" in Table 8.6 differ from the estimated prevalence of past month cigarette use in Table 8.3 because of missing data on the number of cigarettes smoked per day in the past month. Past month smokers were excluded from the analysis in Table 8.6 if they did not report the number of cigarettes they smoked per day in the past 30 days.
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This page was last updated on December 30, 2008.