Table of Contents

Component Description

The Drug Use questionnaire (variable name prefix DUQ) focuses on lifetime and current use of marijuana, cocaine, heroin, and methamphetamine, as well as intravenous use of these and other drugs.

Eligible Sample

Participants aged 12 to 59 years were eligible.

Interview Setting and Mode of Administration

The questionnaire was self-administered at the Mobile Examination Center using the Audio Computer-Assisted Self-Interview (ACASI) system. The questionnaire and information about the interview procedures are available on the NHANES website.

Quality Assurance & Quality Control

For details on the QA/QC process for this component, please refer to the MEC Interviewer Procedures manual on the NHANES website.

Data Processing and Editing

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

Analytic Notes

Since the questionnaire was asked in the MEC, the MEC sample weights should be used in the analysis. Please refer to the Analytic Guidelines and the NHANES Tutorials for 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 - 59 YEARS

DUQ230 - # of days used marijuana or hashish

Variable Name:
DUQ230
SAS Label:
# of days used marijuana or hashish
English Text:
During the past 30 days, on how many days did you use marijuana or cannabis?
English Instructions:
INSTRUCTIONS TO SP: Please enter a number. HARD EDIT VALUES: 0-30. IF DUQ230 > 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 - 59 YEARS
Hard Edits:
0 to 30
Code or Value Value Description Count Cumulative Skip to Item
1 to 30 Range of Values 890 890
0 Did not use in the past 30 days 2911 3801
77 Refused 3 3804
99 Don't know 3 3807
. Missing 620 4427

DUQ250 - Ever use any form of cocaine

Variable Name:
DUQ250
SAS Label:
Ever use any form of cocaine
English Text:
The following questions are about cocaine, including all the different forms of cocaine such as powder, 'crack', 'free base', and coca paste. Have you ever, even once, used cocaine, in any form?
Target:
Both males and females 12 YEARS - 59 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 680 680
2 No 3121 3801
7 Refused 3 3804
9 Don't know 0 3804
. Missing 623 4427

DUQ290 - Ever used heroin

Variable Name:
DUQ290
SAS Label:
Ever used heroin
English Text:
The following questions are about heroin. Have you ever, even once, used heroin?
Target:
Both males and females 12 YEARS - 59 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 94 94
2 No 3706 3800
7 Refused 1 3801
9 Don't know 2 3803
. Missing 624 4427

DUQ330 - Ever used methamphetamine

Variable Name:
DUQ330
SAS Label:
Ever used methamphetamine
English Text:
The following questions are about methamphetamine, also known as crank, crystal, ice or speed. Have you ever, even once, used methamphetamine?
Target:
Both males and females 12 YEARS - 59 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 274 274
2 No 3524 3798
7 Refused 1 3799
9 Don't know 1 3800
. Missing 627 4427

DUQ370 - Ever use a needle to inject illegal drug

Variable Name:
DUQ370
SAS Label:
Ever use a needle to inject illegal drug
English Text:
The following questions are about the different ways that certain drugs can be used. Have you ever, even once, used a needle to inject a drug not prescribed by a doctor?
Target:
Both males and females 12 YEARS - 59 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 78 78
2 No 3720 3798
7 Refused 1 3799
9 Don't know 0 3799
. Missing 628 4427