RESEARCH AND PRACTICE Rates of Household Firearm Ownership and Homicide Across US Regions and States, 1988–1997 Matthew Miller, MD, MPH, ScD, Deborah Azrael, MS, PhD and David Hemenway, PhD Matthew Miller, Deborah Azrael, and David Hemenway are all from the Harvard School of Public Health, Boston, Mass. Correspondence: Requests for reprints should be sent to Matthew Miller, MD, MPH, ScD, Harvard School of Public Health, 677 Huntington Ave, Boston, MA 02115 (e-mail: mmiller@hsph.harvard.edu). ABSTRACT Objectives. In this study we explored the association between rates of household firearm ownership and homicide across the United States, by age groups. Methods. We used...