Table 1.
Enrollment Characteristics in the CCRP and serology sub-studies
| Enrollment Characteristics | Enrolled, N (%) | Enrolled in CDC serologic sub-study, N (%) | Enrolled in NC State serology sub-study, N (%) |
|---|---|---|---|
| Total | 62 261 | 24 965 | 21 849 |
| Age, years | |||
| 18–29 | 6427 (10.3) | 1829 (7.3) | 1872 (8.6) |
| 30–39 | 11 180 (18.0) | 4507 (18.1) | 4058 (18.6) |
| 40–49 | 11 806 (19.0) | 4275 (17.1) | 4796 (22.0) |
| 50–59 | 12 578 (20.2) | 4363 (17.5) | 4991 (22.8) |
| 60–69 | 12 689 (20.4) | 5621 (22.5) | 4456 (20.4) |
| 70–79 | 6546 (10.5) | 3775 (15.1) | 1476 (6.8) |
| ≥80 | 990 (1.6) | 595 (2.4) | 200 (0.9) |
| Sex | |||
| Female | 40 915 (65.8) | 16121 (64.6) | 15 974 (73.1) |
| Male | 18 470 (29.7) | 8844 (35.4) | 5728 (26.2) |
| Not declared | 2831 (4.6) | 0 (0.0) | 147 (0.7) |
| Race/Ethnicity | |||
| White (not Hispanic/Latino) | 50 485 (81.1) | 20203 (80.9) | 20 346 (93.1) |
| Black or African American | 4102 (6.6) | 2235 (9.0) | 550 (2.5) |
| American Indian or Alaskan | 221 (0.4) | 66 (0.3) | 86 (0.4) |
| Asian or Pacific Islander | 1329 (2.1) | 840 (3.4) | 194 (0.9) |
| Hispanic or Latino | 1602 (2.6) | 982 (3.9) | 231 (1.1) |
| Mixed ethnicity | 918 (1.5) | 574 (2.3) | 163 (0.7) |
| Not declared/specified | 3559 (5.7) | 65 (0.3) | 279 (1.3) |
| Geography/site | |||
| WFBH | 26131 (42.0) | 8017 (32.1) | 12 220 (55.9) |
| University of Maryland | 5905 (9.5) | 3840 (15.4) | 0 (0.0) |
| Atrium | 9557 (15.4) | 3922 (15.7) | 4099 (18.8) |
| MedStar health | 12 995 (20.9) | 8779 (35.2) | 0 (0.0) |
| Tulane | 244 (0.4) | 187 (0.7) | 0 (0.0) |
| University of Mississippi | 478 (0.8) | 220 (0.9) | 0 (0.0) |
| Campbell | 889 (1.4) | 0 (0.0) | 536 (2.5) |
| New Hanover | 810 (1.3) | 0 (0.0) | 761 (3.5) |
| Vidant Health | 1671 (2.7) | 0 (0.0) | 990 (4.5) |
| Wake Med | 3536 (5.7) | 0 (0.0) | 3243 (14.8) |