Table of Contents

Locator Record

Title: Drug Use (DUQ )
Contact Number: 1-866-441-NCHS
Years of Content: 1999 - 2000
First Published: June, 2002
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Drug Use
Record Source: NHANES 1999 - 2000
Survey Methodology: NHANES 1999 - 2000 is a stratified multistage probability sample of the civilian non-institutionalized population of the U.S.
Medium: NHANES Web site; SAS transport files

Component Description

The drug use section (variable name prefix DUQ) includes questions on lifetime and current use of marijuana, cocaine and the intravenous use of illicit drugs.

Eligible Sample

All survey participants aged 12-59 years were eligible. Data from participants aged 20-59 years and older are included in this release. Special use data files for participants 12-19 years will be available through the NCHS Research Data Center.

Exclusion Criteria

Mentally impaired individuals and survey participants who did not comprehend English or Spanish were excluded. 

Interview Setting and Mode of Administration

The NHANES Audio Computer Assisted Self Interview (ACASI) was conducted in a private room in the MEC in either English or Spanish. The ACASI enables the respondents both to hear questions through earphones and read questions on the computer and to move at their own speed as they touch the screen to indicate their response. No proxy respondents or translators were used in situations when the respondents could not self-report.

 

Quality Assurance & Quality Control

The NHANES ACASI system had built-in consistency checks, including range checks, valid response checks, and checks for logical relationships. Soft edits alerted the respondents to a potential error or problem, but allowed the respondents to proceed after confirming that the entered value was correct. Hard edits prohibited the respondents from continuing with the ACASI until the error is corrected. Respondents also had the right to refuse to answer any question.

References

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 20 YEARS - 59 YEARS

DUQ100 - Ever used cocaine or other street drug

Variable Name:
DUQ100
SAS Label:
Ever used cocaine or other street drug
English Text:
The following questions ask about drug use. Have you ever used cocaine, including crack or freebase, or other street drugs? Do not include marijuana.
English Instructions:
VERBAL INSTRUCTIONS TO SP: Please select yes, no.
Target:
Both males and females 20 YEARS - 59 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 482 482
2 No 2108 2590 End of Section
7 Refused 6 2596 End of Section
9 Don't know 9 2605 End of Section
. Missing 233 2838

DUQ110 - #days used street drugs over past year

Variable Name:
DUQ110
SAS Label:
#days used street drugs over past year
English Text:
In the past 12 months, how many days have you used cocaine, including crack or freebase, or other street drugs?
English Instructions:
VERBAL INSTRUCTIONS TO SP: Please enter a number. ENTER NUMBER.
Target:
Both males and females 20 YEARS - 59 YEARS
Hard Edits:
0 to 365
Code or Value Value Description Count Cumulative Skip to Item
0 to 365 Range of Values 477 477
777 Refused 5 482
999 Don't know 0 482
. Missing 2356 2838

DUQ120 - Ever used a needle to take street drugs

Variable Name:
DUQ120
SAS Label:
Ever used a needle to take street drugs
English Text:
Have you ever used a needle to take street drugs?
English Instructions:
VERBAL INSTRUCTIONS TO SP: Please select yes, no.
Target:
Both males and females 20 YEARS - 59 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 51 51
2 No 430 481 End of Section
7 Refused 1 482 End of Section
9 Don't know 0 482 End of Section
. Missing 2356 2838

DUQ130 - #days used needle for street drugs/year

Variable Name:
DUQ130
SAS Label:
#days used needle for street drugs/year
English Text:
In the past 12 months, how many days have you used a needle to take street drugs?
English Instructions:
VERBAL INSTRUCTIONS TO SP: Please enter a number. ENTER NUMBER.
Target:
Both males and females 20 YEARS - 59 YEARS
Hard Edits:
0 to 365
Code or Value Value Description Count Cumulative Skip to Item
0 to 80 Range of Values 50 50
777 Refused 1 51
999 Don't know 0 51
. Missing 2787 2838