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Duration since smoked cigarettes regularly: Time period

Codes and Frequencies

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For sample persons aged 18 and older who used to smoke regularly but do not smoke now, SMOKREGTP indicates the time period in days, weeks, months or years corresponding to the length of time since the respondent last smoked cigarettes regularly.

Related Variables
SMOKREGTP reports the time unit that can be used with SMOKREGNO, the number of units, in values 1 through 98, that the respondent reported.

This variable was included in the 1988 Occupational Health supplement.


There are no comparability issues.


  • 1988: Sample adults aged 18+ who used to smoke regularly but do not smoke now


  • 1988