The National Health Interview Survey (NHIS), conducted by the National Center for Health Statistics and the U.S. Census Bureau, is a large, annual, cross-sectional survey designed to measure health status and behaviors in the non-institutionalized U.S. population. This dataset, which was extracted from the 2019 NHIS, includes responses to several questions pertaining to cigarettes. Adult participants (age 18+) were asked, ``Have you smoked at least 100 cigarettes in your entire life?'' Those who answered ``Yes'' were asked additional questions about current use; for those who did not, the interviewers skipped to the next section.
Analyses of NHIS data should account for the stratified multistage cluster sample design. Sample weights, stratum and cluster indicators are included for this purpose.
cig2019a data frame with 31,997 rows and 14 variables:
wtia_ainterim annual weight for analysis of adult questionnaire items; see NOTE below
wtfa_afinal annual weight for analysis of adult questionnaire items; see NOTE below
urbrrlurban/rural classification scheme for
counties, a factor with levels "Large central metro",
"Large fringe metro", "Med/small metro". and
"Nonmetropolitan"
regionregion within the United States, a factor
with levels "Northeast", "Midwest", "South",
and "West"
pstratpseudo-stratum for variance estimation
ppsupseudo-primary sampling unit for variance estimation; see NOTE below
agep_aage in years; see NOTE below
sex_asex, a factor with levels "Male" and
"Female"
hispall_psingle and multiple race groups with
Hispanic origin, a factor with levels "Hispanic", "NH
White only", "NH Black/AfrAmer only", "NH Asian
only", "NH AIAN only", "NH AIAN and other group",
and "Other single and multiple races"
smkev_a``Have you smoked at least 100 cigarettes in
your ENTIRE LIFE?'', a factor with levels "Yes" and
"No"
smknow_a``Do you NOW smoke cigarettes every day,
some days or not at all?'', a factor with levels "Every
day", "Some days", and "Not at all"; see NOTE below
cignow_a``On average, about how many cigarettes do you NOW smoke a day?''; see NOTE below
smk30d_a``On how many of the PAST 30 DAYS did you smoke a cigarette?''; see NOTE below
cig30d_a``On average, when you smoked during the PAST 30 DAYS, about how many cigarettes did you smoke a day?''; see NOTE below