United States Department of Health and Human Services. National Institutes of Health. National Institute on Drug Abuse. Washington, DC, Metropolitan Area Drug Study (DC*MADS), 1991: Household and Non-Household Populations. ICPSR02155-v3. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2008-07-16. https://doi.org/10.3886/ICPSR02155.v3
Persistent URL: https://doi.org/10.3886/ICPSR02155.v3
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District of Columbia,
Date of Collection:
Unit of Observation:
For the Household Study: the civilian,
noninstitutionalized population of the coterminous United States
(Alaska and Hawaii excluded) aged 12 and older. For the
Institutionalized Study: persons in institutional (e.g., correctional
facilities, mental or psychiatric hospitals, noncorrectional
facilities for juveniles) and noninstitutional group quarters (e.g.,
group homes, transitional homes for people leaving treatment for
substance abuse). Nursing homes and hospitals or wards providing drug
and alcohol treatment were excluded. For the Homeless and Transient
Population Study: persons who were either literally homeless or at
imminent risk of becoming homeless, including persons who spent the
previous night in an emergency shelter, in a nondomicile (e.g., vacant
building, city park, car, or on the street), or who were using soup
kitchens or emergency food banks.
Data Collection Notes:
Users should note that the National Institute on
Drug Abuse does not make a public use file available for the DC*MADS
Institutionalized Population Study.
The household and nonhousehold data were drawn from three
sources: (1) the DC MSA oversample of NATIONAL HOUSEHOLD SURVEY OF
DRUG ABUSE, 1991 (ICPSR 6128) (NHSDA), (2) the DC*MADS 1991
Institutionalized Population Study, and (3) WASHINGTON, DC,
METROPOLITAN AREA DRUG STUDY (DC*MADS), 1991: HOMELESS AND TRANSIENT
POPULATION (ICPSR 2346). The NHSDA oversample consisted of interviews
with 2,547 residents from a sample of 5,399 households and selected
group quarters (e.g., college dormitories, homeless shelters). The
Institutionalized Study consisted of 1,203 interviews with residents
of 42 institutions stratified into four groups: 888 interviews from 20
correctional institutions, 207 interviews from 6 psychiatric
institutions, 55 interviews from 7 noncorrectional institutions for
juveniles, and 73 interviews from 9 group homes. The Homeless and
Transient Population Study consisted of 908 interviews from four
overlapping sampling frames: 477 interviews with residents in 93
shelters, 224 interviews with patrons of 31 soup kitchens and food
banks, 143 interviews with "literally homeless" people from 18 major
cluster encampments, and 64 interviews with literally homeless people
from an area probability sample of 432 census blocks in the
MSA. Overlap between the samples may have occurred. The overlap was
minimized by eliminating institutions from the DC*MADS surveys that
would increase overlap. For example, students living in dormitories
were included in the NHSDA but not the DC*MADS Institutionalized
self-administered questionnaires and personal
For the household, institutional, and homeless studies, the
household/institutional response rates were 93.5 percent, 87.5 percent, and 82.6 percent, respectively. The individual interview response rates were 82.1 percent, 89.4 percent, and 86.1 percent. The overall response rates were 76.8 percent, 78.2 percent, and 71 percent.
Extent of Processing: 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.
Created variable labels and/or value labels.
Standardized missing values.
Created online analysis version with question text.
Checked for undocumented or out-of-range codes.