cig2019: Cigarette Use from the 2019 National Health Interview Survey

Description Usage Format Note Source

Description

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.

Usage

1

Format

a data frame with 31,997 rows and 14 variables:

wtia_a

interim annual weight for analysis of adult questionnaire items; see NOTE below

wtfa_a

final annual weight for analysis of adult questionnaire items; see NOTE below

urbrrl

urban/rural classification scheme for counties, a factor with levels "Large central metro", "Large fringe metro", "Med/small metro". and "Nonmetropolitan"

region

region within the United States, a factor with levels "Northeast", "Midwest", "South", and "West"

pstrat

pseudo-stratum for variance estimation

ppsu

pseudo-primary sampling unit for variance estimation; see NOTE below

agep_a

age in years; see NOTE below

sex_a

sex, a factor with levels "Male" and "Female"

hispall_p

single 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

Note

The weight variables wtia_a and wtfa_a both reflect the probability that the person was selected into the sample. The interim annual adult weight wtia includes adjustments for nonresponse due to non-participation in the interview. The final annual adult weight wtia includes adjustments for nonresponse and additional factors to calibrate the sample to population totals for important geographic and demographic variables.

The cluster identifier ppsu is nested within the stratum identifier pstrat; for example, ppsu == 1 in pstrat == 100 and ppsu == 1 in pstrat == 101 represent different clusters.

The age variable agep_a is top-coded at 85; the value agep_a == 85 indicates 85 or older.

Question smknow_a, “Do you NOW smoke cigarettes every day, some days, or not at all?”, was asked only if smkev_a =="Yes"; otherwise it is missing.

Question cignow_a, “On average, about how many cigarettes do you NOW smoke a day?”, was asked only if smknow_a == "Every day"; otherwise it is missing. This variable is top-coded at 95.

Question smk30d_a, “On how many of the PAST 30 DAYS did you smoke a cigarette?”, was asked only if smknow_a == "Some days"; otherwise it is missing.

Question cig30d_a, “On average, when you smoked during the PAST 30 DAYS, about how many cigarettes did you smoke a day?”, was asked only if smknow_a == "Some days" and if (smk30d_a > 0) | is.na(smk30d_a). This variable is top-coded at 95.

Source

National Center for Health Statistics. National Health Interview Survey, 2019. Public-use data file and documentation. https://www.cdc.gov/nchs/nhis/data-questionnaires-documentation.htm. 2020.


cvam documentation built on Oct. 18, 2021, 5:09 p.m.