Baseline characteristics of the study population by age, gender and race/ethnicity
| Description | Frequency | Prevalence (%) |
| Age (years) mean±SD | 38.37±15.88 | |
| Age group (years) | ||
| 18–35 | 8820 | 50.0 |
| 36–50 | 4636 | 26.3 |
| 51–65 | 2760 | 15.6 |
| >65 | 1429 | 8.1 |
| Gender | ||
| Men | 6029 | 34.2 |
| Women | 11 619 | 65.8 |
| Race/ethnicity | ||
| White/Caucasian | 12 281 | 69.6 |
| Black/African American | 296 | 1.7 |
| Asian | 334 | 1.9 |
| Hispanic or Latino/a/x | 2488 | 14.1 |
| American Indian or Alaska Native | 94 | 0.5 |
| Hawaiian or Pacific Islander | 161 | 0.9 |
| Other or multirace | 513 | 2.9 |
| Unknown or declined | 1484 | 8.4 |