99996 = Refused
99997 = Don't Know
99998 = No Response
99999 = N.I.U. (Not in Universe).

Description

For everyday smokers who responded that they had tried to stop smoking to quit completely, TSTOPDUR reports the duration of the longest time they were able to stop smoking in the last 12 months, measured in days. In the original survey, the respondent reports a unit of time (days, weeks, months, years) and a number. To construct TSTOPDUR, the reported value was converted to days by multiplying weeks by 7, months by 30, and years by 365.

In samples after 2002, some responses indicate a length of time greater than 365 days. These responses have been left as they originally appeared (apart from the conversion to days). The number of responses over a year in length within each sample are as follows:

September 2022: 27
May 2019: 32
January 2019: 27
July 2018: 39
May 2015: 19
January 2015: 15
July 2014: 28
May 2011: 2
January 2011: 8
August 2010: 8
May 2010: 13
January 2007: 59
August 2006: 49
May 2006: 72
November 2003: 16
June 2003: 20
February 2003: 16

This variable is part of the Tobacco Use Supplement.

Comparability

This variable is comparable across all available years.

Universe

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Unharmonized Variables