Study population by race, sex, and site
| Sex | |||||
|---|---|---|---|---|---|
| Race | Males | Females | Mixed | Number of groups | Sites |
| * Because of the small number of Asian American Islander participants (n = 40), they were not stratified by individual ethnic group, which included Samoans, Vietnamese, and Mien. | |||||
| African American | 19 | 14 | 3 | 36 | Alabama, Maryland, Missouri, New York, North Carolina, South Carolina |
| American Indian | 4 | 6 | 10 | New Mexico, Oklahoma | |
| Asian American/ Pacific Islander* | 5 | 5 | 10 | Washington | |
| Hispanic | 3 | 2 | 5 | New Mexico | |
| White | 34 | 34 | 68 | Alabama, Illinois, Maryland, Minnesota, Missouri, North Carolina, South Carolina, Texas, West Virginia | |
| Total | 65 | 61 | 3 | 129 | Total number of sites = 13 |