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Table 1 Participants in the sero-survey

From: Duration of SARS-CoV-2 sero-positivity in a large longitudinal sero-surveillance cohort: the COVID-19 Community Research Partnership

  Serology cohort Seropositive sub-cohort
  (n = 11,468) (n = 1172)
Total number of tests 30,620 3856*
  n % Tests/person (mean) n % Tests/person (mean)
Age (years)       
1. < 30 1003 8.7% 2.4 99 8.5% 3.0
2. 30–39 2357 20.6% 2.8 258 22.0% 3.3
3. 40–49 2420 21.1% 2.8 244 20.8% 3.4
4. 50–59 2486 21.7% 2.7 258 22.0% 3.4
5. 60–69 2079 18.1% 2.6 210 17.9% 3.3
6. >  = 70 1123 9.8% 2.5 103 8.8% 3.0
Sex       
F 7085 61.8% 2.7 719 61.4% 3.3
M 4383 38.2% 2.7 453 38.7% 3.3
Race/ethnicity       
Black or African American 622 5.4% 2.1 71 6.1% 2.2
Hispanic or Latino 351 3.1% 2.2 42 3.6% 2.4
Other 554 4.8% 2.4 55 4.7% 2.9
White (not Hispanic/Latino) 9941 86.7% 2.7 1004 85.7% 3.4
Healthcare worker       
N 6949 60.6% 2.4 629 53.7% 3.1
Y 4519 39.4% 3.1 543 46.3% 3.5
Healthcare system       
Atrium Health 2589 22.6% 2.5 298 25.4% 2.9
Wake Forest Baptist Health 8879 77.4% 2.7 874 74.6% 3.4
  1. *Including first positive and all subsequent tests