The Defense Manpower Data Center (DMDC) conducted several studies to assess the presence of nonresponse bias in estimates from the 2012 Workplace and Gender Relations Survey of Active Duty Members (2012 WGRA). The objective of this research was to assess the extent of nonresponse bias for the estimated rate of unwanted sexual contact (USC rate) in the active duty military. The level of nonresponse bias (NRB) can vary for every question on the survey, but DMDC focused on the USC rate because this is the central question on the survey. Nonresponse bias occurs when survey respondents are...