Table of Contents

Component Description

The drug use questionnaire (variable name prefix DUQ) focused on lifetime and current (past 30 days) use of marijuana or hashish. These questions were asked in the NHANES National Youth Fitness Survey (NNYFS) and of NHANES participants aged 3 to 15 years, during the second year of the 2011-2012 NHANES cycle.

Eligible Sample

Participants aged 12-15 years were eligible for NNYFS and 12-69 years for NHANES 2012.  Only data from participants aged 12-15 years old are included in this file with limited access.

Interview Setting and Mode of Administration

The Drug use questionnaire was administered at the Mobile Examination Center (MEC) during the MEC Interview. For Youths 12-15 years, questions were self-administered using the Audio Computer-Assisted Self-Interviewing (ACASI) system. The ACASI was conducted in either English or Spanish. The ACASI enables respondents to hear questions through earphones as well as read questions on the computer screen. Respondents moved at their own speed and touched the screen to indicate their response. No proxy respondents or translators were used in situations when the respondents could not self-report. However, for NNYFS 2012, questions were administered using the Computer-Assisted Self-Interviewing (CASI) system. The CASI enables respondents to read questions on the computer screen. Respondents moved at their own speed and touched the screen to indicate their response.

Quality Assurance & Quality Control

For details on the QA/QC process for this component, please refer to the NHANES (https://wwwn.cdc.gov/nchs/nhanes/search/datapage.aspx?Component=Examination&CycleBeginYear=2011) and the NNYFS (https://www.cdc.gov/nchs/nnyfs/questionnaires.htm) websites.

Data Processing and Editing

The data were edited for completeness, consistency, and illogical values.

Analytic Notes

Please refer to the Analytic Guidelines for 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 12 YEARS - 15 YEARS

DUQ200 - Ever used marijuana or hashish

Variable Name:
DUQ200
SAS Label:
Ever used marijuana or hashish
English Text:
The next question is about marijuana use. Please remember that your answers to these questions are strictly confidential. Marijuana is also called pot or grass. Marijuana is usually smoked, either in cigarettes, called joints, or in a pipe. It is sometimes cooked in food. Hashish is a form of marijuana that is also called "hash." It is usually smoked in a pipe. Another form of hashish is hash oil. Have you ever, even once, used marijuana or hashish?
English Instructions:
Please select . . .
Target:
Both males and females 12 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 76 76
2 No 689 765
7 REFUSED 0 765
9 DON'T KNOW 1 766
. Missing 26 792

DUQ230 - # days used marijuana or hashish/month

Variable Name:
DUQ230
SAS Label:
# days used marijuana or hashish/month
English Text:
During the past 30 days, on how many days did you use marijuana or hashish?
English Instructions:
Please enter a number. HARD EDIT VALUES: 1-30. If DUQ.230 = 0, display error message: "Your response must be greater than 0. Please press the "Back" button, press "Clear," and try again. If DUQ.230 > 30, display error message: "Your response cannot exceed 30 days. Please press the "Back" button, press "Clear," and try again." ENTER A NUMBER
Target:
Both males and females 12 YEARS - 15 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 30 Range of Values 59 59
77 REFUSED 0 59
99 DON'T KNOW 0 59
. Missing 733 792