1. Department of Environmental Health Sciences and Risk Science Center, University of Michigan School of Public Health, Ann Arbor, Michigan, USA;
2. Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, Michigan, USA;
3. Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan, USA;
4. Department of Civil and Environmental Engineering, University of Michigan College of Engineering, Ann Arbor, Michigan, USA;
5. Survey Research and Methodology Program, University of Nebraska–Lincoln, Gallup Research Center, Lincoln, Nebraska, USA