The National Institutes of Health (NIH) define ethnicity as the sociological constructs that emphasize the cultural aspect of a group of people, and race is defined as a biological aspect of a group of people (Crews and Bindon 1991; O'Neil 2008). This study uses this definition, which distinguishes between someone’s ethnic origins ("Hispanic origin" and "Not of Hispanic origin") and race (“American Indian or Alaskan Native,” “Asian or Pacific Islander,” “Black or African American,” and “White”) (Executive Office of the President et al. 2007).
