He teaches courses in survey methodology and data analysis. Other responsibilities including serving as Vice Chair of the Social & Behavioral IRB at UIC and as Director of Evaluation & Tracking for the UIC Center for Clinical and Translational Research. His personal research has focused on measurement and nonresponse errors in surveys, as well as the social epidemiology of health behaviors in disadvantaged population. Funding for his research has come from the National Institutes of Health, the National Science Foundation and the Robert Woods Johnson Foundation.