Table 4.
Characteristics of study population for infection test prediction model
| All (N = 3, 135) | No Infection (N = 1, 474) | Infection (N = 1, 661) | P-Value | |
|---|---|---|---|---|
| Age | 63.0 (49.0-78.0) | 58.0 (42.0-78.0) | 66.0 (55.0-78.5) | 9.00E-28 |
| Female a | 1444.0 (46.1%) | 777.0 (52.7%) | 667.0 (40.2%) | 1.70E-12 |
| Heart Rate | 88.5 (78.0-100.5) | 89.0 (78.0-101.2) | 88.0 (78.2-100.0) | 6.13E-01 |
| Oxygen Saturation | 95.4 (91.8-97.0) | 96.5 (94.8-97.5) | 94.2 (89.6-96.4) | 1.68E-31 |
| Respiratory Frequency | 18.0 (16.0-19.0) | 18.0 (16.0-18.0) | 18.0 (16.0-20.0) | 9.64E-21 |
| Temperature | 98.3 (97.5-99.5) | 97.7 (97.2-98.7) | 99.0 (97.9-100.0) | 4.51E-80 |
| Alanine Aminotransferase | 22.0 (15.0-37.0) | 19.0 (13.0-30.0) | 27.0 (18.0-43.0) | 6.59E-09 |
| Aspartate Aminotransferase | 29.0 (21.0-47.0) | 23.0 (19.0-31.0) | 37.0 (26.0-57.0) | 1.20E-20 |
| Blood Urea Nitrogen | 17.0 (13.0-25.0) | 16.0 (12.0-22.0) | 18.0 (13.0-27.0) | 3.78E-05 |
| Calcium | 9.3 (8.9-9.7) | 9.6 (9.2-9.9) | 9.0 (8.7-9.4) | 1.90E-96 |
| C-Reactive Protein | 31.0 (3.4-107.6) | 4.7 (1.1-35.4) | 69.8 (23.2-152.3) | 1.28E-83 |
| Creatinine | 0.9 (0.8-1.2) | 0.9 (0.7-1.1) | 1.0 (0.8-1.2) | 2.19E-05 |
| Hemoglobin | 13.5 (12.3-14.7) | 13.4 (12.1-14.6) | 13.6 (12.5-14.8) | 5.70E-05 |
| Mean Corpsular Volume | 87.2 (84.0-90.3) | 87.7 (84.2-90.7) | 86.8 (83.9-90.0) | 1.43E-01 |
| Platelets | 223.0 (174.0-285.0) | 241.0 (198.0-297.0) | 202.0 (156.0-266.0) | 1.41E-18 |
| Red Cell Distrbution Width | 13.2 (12.5-14.3) | 13.2 (12.5-14.5) | 13.1 (12.4-14.0) | 1.59E-06 |
| Sodium | 139.0 (137.0-141.0) | 140.0 (138.0-142.0) | 139.0 (136.0-141.0) | 1.12E-14 |
| Prothrombin Time (INR) | 1.0 (1.0-1.1) | 1.1 (1.0-1.1) | 1.0 (1.0-1.1) | 8.96E-01 |
| Total Bilirubin | 0.6 (0.5-0.8) | 0.6 (0.4-0.9) | 0.6 (0.5-0.8) | 8.83E-03 |
| White Blood Cell Count | 7.6 (5.8-10.1) | 8.7 (7.0-11.1) | 6.6 (5.1-8.7) | 7.59E-38 |
| COVID-19 Positive Test a | 1661 (53.0%) | 0 (0%) | 1661 (100%) | – |
Count (proportion) is reported for binary variables