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6.4.1 History of Smoking Status
Recodes on the NHIS
The most basic questions about cigarette smoking consist of a smoking screener (Have you ever smoked at least 100 cigarettes in your life?) and a current smoking question (Do you now smoke cigarettes?). See the section on methodological issues for more information.
The data from these individual questions were not used in raw form. A recode variable was created that combined responses from both questions into one variable that was used to compute the estimates of smoking prevalence published in NHIS reports. The response categories most often included in the smoking status recode variable are:
1. Current smoker
2. Former smoker
3. Never smoker
4. Unknown
A report on the earliest NHIS/NCHS smoking data referred to several special CPS supplements that were processed by NCHS. This was the first use of the smoking status recode variable in a federal survey of cigarette smoking [1]. Prevalence estimates in the earliest report of NHIS cigarette smoking supplement data were calculated using the smoking status recode [2]. Beginning in 1970, all NHIS files with data on cigarette smoking included a smoking status recode variable.
References:
1. Ahmed, PI and
Gleeson, GA. 1970. Changes in Cigarette Smoking Habits between
1955 and 1966. Vital and Health Statistics: Data from the National Health
Survey.
Series 10, No. 59. Rockville, MD: National Center for Health Statistics.
2. Wilson, RW. 1967. Cigarette Smoking and
Health Characteristics: United States,
July 1964 and June 1965. Series 10, No. 34. Washington, DC: National Center
for
Health Statistics.
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This page last reviewed September 09, 2008
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