Table 1.
Subject demographics of SARS-CoV-2 testing across 8 sites.
| Individuals, no. (%) |
|||
|---|---|---|---|
| Variable | Overall | Negative results | Positive results |
| (n = 126 452) | (n = 107 547) | (n = 18 905) | |
| Age, years | |||
| Mean (SD) | 51.9 (18.4) | 51.3 (18.4) | 55.1 (18.6) |
| Median (IQR) | 52.0 (30.0) | 51.6 (29.2) | 55.3 (28.8) |
| ≥ 65 | 33 910 (26.8) | 27 868 (25.9) | 6042 (32.0) |
| Sex | |||
| Female | 73 624 (58.2) | 63 310 (59.0) | 10 314 (55.0) |
| Male | 52 747 (41.7) | 44 164 (41.0) | 8583 (45.0) |
| Unknown | 81 (0.1) | 73 (0.0) | 8 (0.0) |
| Race | |||
| White | 68 856 (54.5) | 63 618 (59.2) | 5238 (27.7) |
| Black | 27 805 (22.0) | 20 582 (19.1) | 7223 (38.2) |
| Asian/Pacific Islander | 4611 (3.6) | 4009 (3.7) | 602 (3.2) |
| American Indian Alaska Native | 518 (0.4) | 468 (0.4) | 50 (0.3) |
| Multiracial | 843 (0.7) | 594 (0.6) | 249 (1.32) |
| Othera | 8430 (6.7) | 5423 (5.0) | 3007 (15.9) |
| Unknown | 15 389 (12.2) | 12 853 (12.0) | 2536 (13.4) |
| Ethnicity | |||
| Not Hispanic | 100 644 (79.6) | 87 556 (81.4) | 13 088 (69.2) |
| Hispanic | 11 041 (8.7) | 7759 (7.2) | 3282 (17.4) |
| Unknown | 14 767 (11.1) | 12 232 (11.4) | 2535 (13.4) |
| Population density | |||
| Mean (SD) | 7501 (15 601) | 5729 (12 893) | 17 580 (23 727) |
| Median (IQR) | 2349 (5119) | 1963 (4491) | 5136 (25 363) |
| I: (0.128, 499) | 31 614 (25.0) | 29 776 (27.7) | 1838 (9.7) |
| II: (499, 2351) | 31 862 (25.2) | 29 108 (27.1) | 2754 (14.6) |
| III: (2351, 5621) | 31 382 (24.8) | 26 012 (24.2) | 5370 (28.4) |
| IV: (5621, 152 693) | 31 594 (25.0) | 22 651 (21.1) | 8943 (47.3) |
| SES Index | |||
| Mean (SD) | −0.1 (2.1) | 0.0 (2.1) | −0.7 (2.2) |
| Median (IQR) | −0.2 (2.9) | −0.0 (2.9) | −0.7 (3.0) |
| I: (−7.8, −1.5) | 31 835 (25.2) | 24 641 (22.9) | 7194 (38.1) |
| II: (−1.5, −0.2) | 31 442 (24.9) | 27 144 (25.2) | 4298 (22.7) |
| III: (−0.2, 1.4) | 31 668 (25.0) | 27 452 (25.5) | 4216 (22.3) |
| IV: (1.4, 8.4) | 31 507 (24.9) | 28 310 (26.3) | 3197 (16.9) |
| ZCTA % Medicaid | |||
| Mean (SD) | 22.9 (14.1) | 21.5 (13.1) | 31.0 (16.6) |
| Median (IQR) | 19.5 (18.5) | 18.8 (16.8) | 30.2 (27.2) |
| ZCTA % Black | |||
| Mean (SD) | 19.4 (23.8) | 17.1 (22.1) | 32.2 (28.7) |
| Median (IQR) | 10.0 (21.9) | 9.2 (18.4) | 22.8 (40.5) |
| Test location | |||
| Emergency department | 25 533 (20.2) | 18 526 (17.2) | 7007 (37.1) |
| Inpatient | 22 517 (17.8) | 17 715 (16.5) | 4802 (25.4) |
| Outpatient | 77 952 (61.6) | 70 893 (65.9) | 7059 (37.3) |
| Unknown | 450 (0.4) | 413 (0.4) | 37 (0.2) |
Abbreviations: IQR, interquartile range; SES, socioeconomic status; ZCTA, zip code tabulated area.
a
Other was a distinct racial category.