Table 3.
Comparison of laboratory values of the COVID-19–like cohort and patients with COVID-19.
| Laboratory values | Values missing, n (%) | Median (IQR) | Values missing, n (%) | Median (IQR) | P value |
| White blood cell count, K/μL | 2767 (16.8) | 8.9 (5.7) | 0 (0.0) | 6.8 (3.5) | <.001 |
| Lymphocyte count, K/μL | 3386 (20.5) | 1.0 (0.8) | 2 (1.3) | 1.1 (0.7) | .008 |
| Platelet count, K/μL | 2768 (16.8) | 197.3 (134.5) | 0 (0.0) | 240.9 (110.7) | <.001 |
| Alanine aminotransferase, units/L | 3977 (24.1) | 32.0 (25.5) | 1 (0.6) | 33.2 (39.7) | .65 |
| Aspartate aminotransferase, units/L | 3803 (23.0) | 29.0 (24.9) | 1 (0.6) | 40.9 (28.6) | <.001 |
| Total bilirubin, mg/dL | 5125 (31.0) | 0.6 (0.5) | 2 (1.3) | 0.4 (0.3) | <.001 |
| Albumin, g/dL | 3744 (22.7) | 2.8 (1.0) | 1 (0.6) | 3.4 (0.5) | <.001 |
| Blood urea nitrogen, mg/dL | 2818 (17.1) | 19.0 (16.5) | 0 (0.0) | 13.5 (10.3) | <.001 |
| Troponin I, ng/mL | 12,026 (72.8) | 0.06 (0.18) | 135 (84.9) | 0.05 (0.14) | .82 |
| D-dimer, ng/mL | 14,717 (89.1) | 2311.8 (2646.5) | 141 (88.7) | 1125.5 (976) | .001 |
| Lactate dehydrogenase, units/L | 13,793 (83.5) | 293.0 (259.8) | 56 (35.2) | 369.0 (188.0) | <.001 |
| Ferritin, ng/mL | 14,763 (89.4) | 355.0 (819.2) | 55 (34.6) | 788.5 (875.8) | <.001 |
| Procalcitonin, ng/mL | 13,965 (84.6) | 0.5 (1.4) | 52 (32.7) | 0.1 (0.2) | <.001 |
| C-reactive protein, mg/dL | 15,225 (92.2) | 8.7 (13.7) | 71 (44.7) | 7.2 (10.2) | .30 |
| Creatine kinase, units/L | 13,668 (82.8) | 76.0 (143.5) | 93 (58.5) | 81.5 (161.1) | .61 |
| Sodium, mmol/L | 2751 (16.7) | 136.9 (4.8) | 0 (0.0) | 137.0 (4.3) | .56 |
| Potassium, mmol/L | 2750 (16.7) | 4.0 (0.5) | 0 (0.0) | 4.0 (0.5) | .97 |
| Creatinine, mg/dL | 2757 (16.7) | 1.0 (0.6) | 0 (0.0) | 0.8 (0.3) | <.001 |
| Prothrombin time, s | 6322 (38.3) | 15.2 (3.2) | 43 (27.0) | 13.6 (1.5) | <.001 |
| Oxygen saturation, % | 7107 (43.0) | 96.0 (2.5) | 0 (0.0) | 95.9 (2.4) | .10 |
| Fraction of inspired oxygen, % | 8125 (49.2) | 28.5 (10.0) | 35 (22.0) | 27.7 (13.4) | .44 |