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Government Shutdown 2025 Monthly Data Status: September data are now available via IPUMS. October data were not collected. November data collection was extended and release of these data by the Census Bureau will be delayed.
ECFREQ30
Frequency of E-cigarette usage in the past 30 days.

Codes

This variable is 2-digit numeric variable.

0 = None
96 = Refused
97 = Don't know
98 = No response
99 = Not in universe

Top code = 30

Description

ECFREQ30 indicates the how many times the respondent used an E-cigarette in the past 30 days for persons interviewed for the Tobacco Use Supplement (TBRESP) who have used E-cigarettes 'some days' in the past 30 days (ECFREQ).

This variable is part of the Tobacco Supplement.

Comparability

The universe that IPUMS CPS reports for this variable is based on a review of the original CPS technical documentation. Investigating the data may reveal cases that do not meet the stated universe. Users are encouraged to validate universes for their analyses.

Universe

  • Jul 2014, Jan 2015, May 2015, Jul 2018, Jan 2019, May 2019, Sep 2022, Jan 2023, and May 2023: Persons interviewed for the Tobacco Use Supplement (TBRESP) who have used E-cigarettes 'some days' in the past 30 days (ECFREQ).

Availability

Years Jan Feb ASEC Apr May Jun Jul Aug Sep Oct Nov Dec
2014 - - - - - - X - - - - -
2015 X - - - X - - - - - - -
2018 - - - - - - X - - - - -
2019 X - - - X - - - - - - -
2022 - - - - - - - - X - - -
2023 X - - - X - - - - - - -

Flags

This variable has no flags.

Unharmonized Variables

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