Table 1.
Demographics of research participants to whom the survey was sent compared to those who responded.*
| Participant characteristics | Mailed sample* | Response sample for the centers providing ‘mailing sample’ data | |||
|---|---|---|---|---|---|
|
| |||||
| Ethnicity | N | % | N | % | |
| Hispanic | 784 | 6.70% | 120 | 6.70% | |
| Non-Hispanic | 10,848 | 93.30% | 1,684 | 93.30% | |
|
| |||||
| Race | |||||
|
| |||||
| American Indian or Alaskan Native | 98 | 0.7% | 35 | 1.5% | |
| Asian | 474 | 3.3% | 79 | 3.4% | |
| Black or African American | 1,509 | 10.4% | 210 | 9.2% | |
| Native Hawaiian/Pacific Islander | 45 | 0.3% | 13 | 0.6% | |
| White | 10,909 | 74.8% | 1,958 | 85.3% | |
| More than one race | 827 | 5.7% | |||
| Unknown/missing | 716 | 4.9% | |||
|
| |||||
| Gender | |||||
|
| |||||
| Female | 1991 | 54.9% | 553 | 56.8% | |
| Male | 1507 | 41.5% | 392 | 40.2% | |
| Missing | 130 | 3.6% | 29 | 3.0% | |
*
Data are from 6 centers that provided the data on ethnicity, 8 centers that provided data on race, and 4 centers that provided data on gender.