Protocol - Tobacco - Age of Offset of Cigarette Use - Adult
Measurement to ascertain when the respondent quit smoking. Response is used to calculate duration of use and pack-years measures and allows one to distinguish recent quitters from long-time quitters.
The Working Group acknowledges that the following questions may gather sensitive information relating to the use of substances and/or illegal conduct. If the information is released it might be damaging to an individual’s employability, lead to social stigmatization, or other consequences. For information on obtaining a Certificate of Confidentiality, which helps researchers protect the privacy of human research participants, please go to the National Human Genome Research Institute’s Institutional Review Board website. Note to interviewer: Respondents who were classified as a "Former Smoker" by answering the Tobacco - Smoking Status (Adult Protocol) Question 1 as "Yes" (Have you smoked at least 100 cigarettes in your entire life?) and Question 2 as "Not at all" (Do you now smoke every day, some days or not at all?) are asked: About how long has it been since you COMPLETELY quit smoking cigarettes? Enter number: _____[RANGE: 1-99, Don’t Know / Refused]; Enter unit reported:
1 [ ] Days
2 [ ] Weeks
3 [ ] Months
4 [ ] Years
0 [ ] Don’t Know / Refused
Protocol Name from Source:
Tobacco Use Supplement to the Current Population Survey
Personnel and Training Required
Interviewer must be trained and found competent to conduct personal interviews with individuals from the general population. The interviewer should be trained to prompt respondents further if a "don’t know" response is provided.
While the source instrument was developed for administration by computer, the PhenX Working Group acknowledges that these questions can be administered in a noncomputerized format.
|Specialized requirements for biospecimen collection||No|
|Average time of greater than 15 minutes in an unaffected individual||No|
Mode of Administration
≥18 years of age* * If the study population consists of adolescents and young adults (12-24 years) with the intention of studying onset of risky behaviors, the investigator may wish to use the adolescent profile. If the study population primarily consists of adults (≥18 years), emphasizing established smoking and/or cessation, the investigator should use the adult profile.
Respondent is asked how long it has been since he or she completely quit smoking only if he or she was classified as a Former Smoker based on responses to the Tobacco - Smoking Status (Adult Protocol). Length of time and unit of time (days, weeks, months, years) are recorded.
The protocol from the Tobacco Use Supplement to the Current Population Survey (TUS-CPS) was chosen because it is a large survey (each survey wave includes about 240,000 respondents) of the U.S. noninstitutionalized civilian population that has been conducted since 1992 in a consistent manner. The next wave is being planned for 2010-2011, and it is anticipated that the survey will be conducted triennially over the next decade. The National Cancer Institute (NCI) is the primary sponsor of the survey series, with the Centers for Disease Control and Prevention (CDC) serving as cosponsor between 2001 and 2007. The TUS is an adult-focused survey, and its questions are comparable to the CDC’s National Center for Health Statistics’ National Health Interview Survey (NHIS) and National Health and Nutrition Examination Survey (NHANES) and NCI’s Health Information National Trends Survey (HINTS).
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|Common Data Elements (CDE)||Person Cigarette Smoking Cessation Age||2786151||CDE Browser|
|Logical Observation Identifiers Names and Codes (LOINC)||Tobac age offset adult proto||62501-2||LOINC|
Duration of smoking: (Tobacco - Age of Offset of Cigarette Use1 OR Current Age) - (Tobacco - Age of Initiation of Use)2 Pack-years: (Tobacco - 30-Day Quantity and Frequency)3 X (Duration)4 The estimation of the components of this calculation can be derived from several PhenX measures. 1 Tobacco - Age of Offset of Cigarette Use:
- Adolescents: (Current Age) - (length of time response to the question: "How old were you the last time you smoked part or all of a cigarette?")
- Adults: (Current Age) - (length of time response to the question: "About how long has it been since you COMPLETELY quit smoking cigarettes?")
2 Tobacco - Age of Initiation of Use:
- Adolescents: Age derived from the answer to: 2. "How old were you when you first started smoking cigarettes every day?" OR - For those who never smoked every day, the answer from 1. "How old were you when you first smoked part or all of a cigarette?"
- Adults: Age derived from the answer to: 1. "How old were you when you first started smoking cigarettes every day?" OR - For those who never smoked every day, the answer from 2. "How old were you when you first started smoking cigarettes fairly regularly?"
3 Tobacco - 30-Day Quantity and Frequency:
- Adolescents: Response to question "On the [number of days reported in 2a or 2b] you smoked cigarettes during the past 30 days, how many cigarettes did you smoke per day, on average?"
- Every-day smokers: Response to question "On the average, about how many cigarettes do you now smoke each day?"
- Some-day smokers: [(Response to question "On the average, on those days, how many cigarettes did you usually smoke each day?") X (Response to "On how many of the past 30 days did you smoke cigarettes?")] / 30
- Former smokers:
- Respondents who smoked every day for ≥6 months: Response to question "When you last smoked every day, on average how many cigarettes did you smoke each day?"
- Respondents who did not smoke every day for ≥6 months: Response to question "When you last smoked fairly regularly, on average how many cigarettes did you smoke each day?"
- The Fagerstrom Test for Nicotine Dependence measure (4. How many cigarettes/day do you smoke?) can also be used to calculate the amount of cigarettes smoked.
- Use the midpoint from the response category to obtain the number of cigarettes smoked per day.
4 Duration calculation provided above
Process and Review
The Expert Review Panel #3 (ERP 3) reviewed the measures in Alcohol, Tobacco and Other Substances, and Substance Abuse and Addiction domains.
Guidance from ERP 3 includes:
• No significant changes to measure
Back-compatible: NA no changes to Data Dictionary
Previous version in Toolkit archive (link)
U.S. Department of Commerce, Census Bureau. (2008). National Cancer Institute and Centers for Disease Control and Prevention Co-sponsored Tobacco Use Supplement to the Current Population Survey (2006-2007) Technical documentation. Question H1.
National Cancer Institute. (2009). Tobacco Use Supplement to the Current Population Survey: Reports and publications using the TUS-CPS [Bibliography]. Available from http://riskfactor.cancer.gov/studies/tus-cps/publications.html
|Variable Name||Variable ID||Variable Description||Version||dbGaP Mapping|
|PX030902_Smoking_Cessation_Time_Number||PX030902010000||About how long has it been since you COMPLETELY quit smoking cigarettes?||4||Variable Mapping|
|PX030902_Smoking_Cessation_Time_Number_Coded||PX030902010100||About how long has it been since you COMPLETELY quit smoking cigarettes?||4||N/A|
|PX030902_Smoking_Cessation_Time_Unit||PX030902020000||About how long has it been since you COMPLETELY quit smoking cigarettes?||4||Variable Mapping|
Tobacco - Age of Offset of Cigarette Use
February 6, 2009
Questions asking a former smoker respondent how long it has been since s/he has quit smoking.
This measure assesses when the participant’s exposure to cigarette smoking ended. When this measure is used in conjunction with the Tobacco - Age of Initiation of Use measure, the participant’s duration of smoking can be derived. Pack-years can also be derived from calculating the measure of amount smoked and duration.
tobacco, smoking, cigarette, nicotine, nicotine dependence, duration of smoking, pack years, National Survey on Drug Use and Health, NSDUH