Table 1 Demographics and baseline characteristics of SARS-CoV-2-negative (uninfected) and -positive (infected) subjects
From: An AI-powered patient triage platform for future viral outbreaks using COVID-19 as a disease model
Variables | SARS-CoV-2-negative subjects | SARS-CoV-2-positive subjects | |||
|---|---|---|---|---|---|
HCWa Healthy Control (N = 324) | Total (N = 111) | Class 1b (N = 29) | Class 2c (N = 62) | Class 3d (N = 20) | |
Sex-no. (%) | Â | ||||
 Male | 21.9 | 51.4 | 34.5 | 53.2 | 70.0 |
 Female | 78.1 | 48.6 | 65.5 | 46.8 | 30.0 |
Race (%) | Â | ||||
White/Caucasian | 75.0 | 52.3 | 69.0 | 51.6 | 30.0 |
Black/African American | 3.7 | 33.3 | 24.1 | 32.3 | 50.0 |
Asian | 7.4 | 1.8 | 0.0 | 3.2 | 0.0 |
Other | 4.9 | 11.7 | 6.9 | 12.9 | 15.0 |
Unknown | 9.0 | 0.9 | 0.0 | 0.0 | 5.0 |
Ethnicity (%) | |||||
 Non-hispanic | 80.6 | 82.0 | 79.3 | 83.9 | 80.0 |
 Hispanic or Latino | 8.6 | 17.1 | 20.7 | 16.1 | 15.0 |
 Unknown | 10.8 | 0.9 | 0.0 | 0.9 | 5.0 |
Age-year | |||||
 Mean (SD) | 37.7 (11.4) | 60.2 (18.2) | 53.1 (18.8) | 63.9 (16.8) | 59.1 (19.1) |
 BMI (kg/m2) |  | ||||
 Mean (SD) | 26.2 (5.5) | 30.9 (8.9) | 27.8 (7.5) | 30.3 (8.5) | 36.9 (9.7) |
Time from admission to first positive PCR (days) (negative means PCR test prior to admission) | |||||
 Mean (SD) | N/A | −2.0 (7.9) | −5.0 (13.0) | −0.2 (3.9) | −3.3 (7.4) |
Time from admission to advanced oxygen (days) | |||||
 Mean (SD) | N/A | N/A | N/A | N/A | 3.4 (7.3) |
Length of stay (days) | |||||
 Mean (SD) | N/A | 14.2 (15.3) | 6.3 (6.9) | 14.6 (16.1) | 24.5 (15.8) |
SPO2_24_hours_mean | |||||
 Mean (SD) | N/A | 96.3 (1.7) | 97.5 (1.3) | 95.9 (1.5) | 95.8 (1.9) |
 Survival (%) | 100.0 | 93.7 | 100.0 | 100.0 | 65.0 |