Table of Contents

Component Description

The smoking– household smokers (variable name prefix SMQFAM) section of the Family Questionnaire provides information to evaluate exposure to secondhand smoke for all persons living in the household. The questions were revised in 2013-2014, although at least one variable, number of persons who smoke inside the house, is similar.

Eligible Sample

All participants were eligible.

Interview Setting and Mode of Administration

One respondent in each family answered questions about the smoking status of all members of the household. These questions were asked as part of the Family Questionnaire, in the home, using the Computer-Assisted Personal interview (CAPI) system.

Quality Assurance & Quality Control

The CAPI system is programmed with built-in consistency checks to reduce data entry errors. CAPI also uses online help screens to assist interviewers in defining key terms used in the questionnaire.

Data Processing and Editing

A small percentage of household respondents inconsistently reported responses to questions, which were adjudicated when possible. Summary variables were created during the editing process in order to preserve confidentiality and to establish more analytically useful data.

Analytic Notes

The question for the new variable SMD470 – "number of persons who smoke inside the home" – differed slightly from the question for variable SMD415 from previous cycles. Analysts may consider combining these variables for trend analysis. SMD460 and SMD480 are new variables. Other questions on secondhand smoke exposure are in the new 2013-14 data file: SMQSHS.

Questions on participant-level cigarette smoking and other tobacco use are located in SMQ and SMQRTU data files. Two biologic indicators of tobacco exposure, serum cotinine (metabolite of nicotine) and urinary NNAL measurements, are available in the COTNAL laboratory data file. Other laboratory measures based on a special subset of smokers and nonsmokers are also available.

Questions on person-level cigarette smoking and other tobacco use are located in SMQ and SMQRTU data files. Two biologic indicators of tobacco exposure serum cotinine (metabolite of nicotine) and urinary NNAL measurements are available in the COTNAL laboratory data file. Other laboratory measures based on special subset of smokers and nonsmokers are also available.

The NHANES full sample 2-Year MEC Exam Weights (WTMEC2YR) can be used to analyze the 2013-2014 SMQFAM variables in conjunction with the laboratory measurements on tobacco exposure, or any examination-related data.

Please refer to the NHANES Analytic Guidelines and the on-line NHANES Tutorial for further details on the use of sample weights and other analytic issues.

Codebook and Frequencies

SEQN - Respondent sequence number

Variable Name:
SEQN
SAS Label:
Respondent sequence number
English Text:
Respondent sequence number.
Target:
Both males and females 0 YEARS - 150 YEARS

SMD460 - # of people who live here smoke tobacco?

Variable Name:
SMD460
SAS Label:
# of people who live here smoke tobacco?
English Text:
Now I would like to ask you a few questions about smoking in this home. How many people who live here smoke cigarettes, cigars, little cigars, pipes, water pipes, hookah, or any other tobacco product?
English Instructions:
INTERVIEWER INSTRUCTION: IF RESPONSE IS NO ONE, ENTER ZERO. ENTER NUMBER OF PERSONS. CAPI INSTRUCTION: ALLOW '0' AS AN ENTRY. RANGE EDIT: CANNOT BE GREATER THAN # OF PEOPLE IN THE HOUSEHOLD. IF '0', DK OR RF, GO TO END OF SECTION.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 No one in houseold is a smoker 7601 7601 End of Section
1 1 household member is a smoker 1403 9004
2 2 household members are smokers 849 9853
3 3 or more household members are smokers 200 10053
777 Refused 5 10058 End of Section
999 Don't know 1 10059 End of Section
. Missing 116 10175

SMD470 - # of people who smoke inside this home?

Variable Name:
SMD470
SAS Label:
# of people who smoke inside this home?
English Text:
Not counting decks, porches, or detached garages, how many people who live here smoke cigarettes, cigars, little cigars, pipes, water pipes, hookah, or any other tobacco product inside this home?
English Instructions:
ENTER NUMBER OF PERSONS. CAPI INSTRUCTION: ALLOW '0' AS AN ENTRY. HARD EDIT: NUMBER ENTERED IN SMQ.470 MUST BE EQUAL OR LESS THAN SMQ.460. IF '0', DK OR RF, GO TO END OF SECTION.
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 No one smokes inside the house 1145 1145 End of Section
1 1 household member smokes inside the house 724 1869
2 2 household members smoke inside the house 511 2380
3 3 or more household members smoke inside the house 72 2452
777 Refused 0 2452
999 Don't know 0 2452
. Missing 7723 10175

SMD480 - In past week # days person smoked inside

Variable Name:
SMD480
SAS Label:
In past week # days person smoked inside
English Text:
(Not counting decks, porches, or detached garages) During the past 7 days, that is since last [TODAY'S DAY OF WEEK], on how many days did {anyone who lives here/you}, smoke tobacco inside this home?
English Instructions:
ENTER NUMBER OF DAYS FROM 0 TO 7. CAPI INSTRUCTION: IF ONLY ONE PERSON LIVING IN HOUSEHOLD DISPLAY "you.." IF MORE THAN ONE PERSON LIVING IN HOUSEHOLD, DISPLAY "anyone who lives here.."
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 0 98 98
1 1 179 277
2 2 230 507
3 3 49 556
4 4 35 591
5 5 27 618
6 6 7 625
7 7 679 1304
77 Refused 0 1304
99 Don't know 3 1307
. Missing 8868 10175