Chicago Male Drug Use and Health Survey (MSM Supplement), 2002-2003 (ICPSR 34303)

Published: Aug 1, 2012

Principal Investigator(s):
Michael Fendrich, University of Illinois at Chicago. Institute for Juvenile Research; Timothy Johnson, University of Illinois at Chicago. Survey Research Laboratory

Version V2

In recent years, club drugs such as MDMA, Ketamine, GHB, and Rohypnol have emerged as major drugs of abuse. The national and local Chicago news media have publicized law enforcement actions and adverse health outcomes, including fatalities, related to the abuse of these substances. Media accounts and a limited body of research have identified use of these substances as prevalent in the gay male community. This prevalence coincides with recent increases in HIV seropositive incidence. There is a clear need for a more comprehensive understanding of the prevalence of club drug use in the general population, and particularly in the subgroup of sexually active gay men. Noting these research gaps and their considerable adverse public health implications, this supplemental study was designed to apply an expanded protocol developed from an earlier study conducted (Feasibility and Use of Biological Measurement in Drug Surveys; R01DA12425, SRL Study #860) to a sample of gay men in the city of Chicago (Michael Fendrich, Principal Investigator). This study evaluated whether findings regarding the feasibility and use of drug testing in drug surveys derived from general population samples are generalizable to a probability sample of 216 gay men in the city of Chicago. For this project, a supplemental module was added to the main study survey that asked detailed questions about involvement in the gay community, risky sexual activity and HIV seropositivity. The scope of biological measurement was also expanded to incorporate testing for Rohypnol and Ketamine in hair (MDMA was already being tested as part of the general sample hair screen). The dataset contains 676 variables.

Fendrich, Michael, and Johnson, Timothy. Chicago Male Drug Use and Health Survey (MSM Supplement), 2002-2003. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2012-08-01.

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United States Department of Health and Human Services. National Institutes of Health. National Institute on Drug Abuse (R01 DA12425-02S1, R01 DA018625)

ZIP code

Access to the Chicago Male Drug Use and Health Survey (MSM Supplement), 2002-2003, data is restricted. Users interested in obtaining these data must complete a Restricted Data Use Agreement, specify the reasons for the request, and obtain IRB approval or notice of exemption for their research. Apply for access to these data through the ICPSR data access request system portal, which can be accessed via the study home page. See the ICPSR data access request system portal for information and instructions.

2002-09 -- 2003-01

2002-09 -- 2003-01

The geographic area covered in this research included households within two Chicago ZIP codes. The sample was selected in three stages within the two ZIP codes. First, city blocks were randomly selected. Second, all of the households on the selected blocks were listed in the sample. At the third stage of selection, each of the selected households was screened to determine if any residents were eligible. If more than one resident in a household was eligible, a respondent was randomly selected using the 'next-birthday' method. The final sample size was 7,644 households within 44 census blocks. Please consult the study documentation for further information regarding the sample design.


Eligible men between the ages of 18 and 55 who self-identified as being homosexual, bisexual, or as having ever had sex with another man, living in households within two Chicago ZIP codes.


clinical data

survey data

Entire sample response rate: 34.86 percent. This response rate is calculated in the following manner: The numerator includes completed interviews, and the denominator includes interviews, refusals, non-contact of eligible respondents, and a proportion of households whose eligibility status is unknown. Please consult the study documentation for further information regarding response rates.



2012-08-01 The DDI file for this study has been updated for use in the SSVD.

2012-07-31 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:

  • Created variable labels and/or value labels.
  • Standardized missing values.
  • Checked for undocumented or out-of-range codes.

One weight, adt_wgt, has been calculated for use in analysis. The weight variable adt_wgt is the adjustment for differential probability of selection of eligible adults in the household. Please consult the study documentation for further information regarding sample weighting.


  • The public-use data files in this collection are available for access by the general public. Access does not require affiliation with an ICPSR member institution.

  • One or more files in this data collection have special restrictions. Restricted data files are not available for direct download from the website; click on the Restricted Data button to learn more.


This study is maintained and distributed by the National Addiction & HIV Data Archive Program (NAHDAP). NAHDAP is supported by the National Institute on Drug Abuse (NIDA), part of the National Institutes of Health (NIH).