National Household Survey on Drug Abuse, 1993 (ICPSR 6852)

Time Period(s)

1993

Date of Collection

1993-01-09 -- 1993-12-31

Data Collection Notes

For some drugs that have multiple names, questions regarding the use of that drug may be asked for each distinct name. For example, even though methamphetamine, methedrine and desoxyn are the same drug, their use was measured in three separate variables.

Data were collected by Research Triangle Institute, Research Triangle Park, NC, and prepared for release by National Opinion Research Center, Chicago, IL.

Sample

Multistage area probability sample design involving four selection stages: (a) primary areas (e.g., counties), (b) subareas within primary areas (blocks or block groups), (c) dwelling (listing) units (housing units or group quarters) within subareas, and (d) persons within dwelling (listing) units. A specially designed within-dwelling selection procedure was used to ensure desired sample sizes for subpopulations defined by age, smoking status, and race/ethnicity. Based on the strong association between reports of past-month cigarette smoking and recent drug use, a screening question was also introduced to collect past-month cigarette smoking status for all rostered persons within sampled dwellings. The three race/ethnicity classifications of dwelling unit heads were Hispanic, non-Hispanic Black (Black), and non-Hispanic non-Black (Whites and others). Six Metropolitan Statistical Areas (MSAs) of special interest were oversampled: Washington, DC, New York, Miami, Chicago, Denver, and Los Angeles. These MSAs were oversampled in a way to allow separate estimation for low socioeconomic status (SES) urbanized areas and for all other areas of each MSA. Blacks, Hispanics, and youths aged 12-17 were also oversampled.

Universe

The civilian, noninstitutionalized population of the United States aged 12 and older, including residents of noninstitutional group quarters, such as college dormitories, group homes, and civilians dwelling on military installations. Persons with no permanent address, such as homeless persons and those living in hotels, were also included in the survey.

Unit(s) of Observation

individual

Data Source

self-enumerated questionnaires (drug use), and personal interviews

survey data

Response Rates

A completed interview had to contain, at a minimum, data on the recency of use of marijuana, cocaine, and alcohol. The overall response rate was 79.2 percent. The response rates for the three race/ethnicity groups were: 85.2 percent for Hispanics, 82.9 percent for Blacks, and 75 percent for Whites and others.

Original Release Date

1997-03-07

Version Date

2013-05-06

Version History

2013-05-06 Data collection instrument released.

2008-10-28 New files were added. These files included one or more of the following: Stata setup, SAS transport (CPORT), SPSS system, Stata system, SAS supplemental syntax, and Stata supplemental syntax files, and tab-delimited ASCII data file. Modified value labels and missing values for variable GQTYPE to correct previous errors. The variable CASEID was also added to the dataset.

1997-07-18 A machine-readable codebook in Portable Document Format (PDF) is now available.

1997-03-07 ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

• Performed consistency checks.
• Standardized missing values.
• Created online analysis version with question text.
• Checked for undocumented or out-of-range codes.

1999-06-16 SAS and SPSS data definition statements have been updated to include value labels and missing values sections.

Weight

Data were weighted based on the four stages of sampling that were used. Adjustments were made to compensate for nonresponse and sampling error. Adjustments also included trimming sample weights to reduce excessive weight variation and a post-stratification to Census population estimates. The final weight variable to be used in analysis is ANALWT.