Table 2.
Basic characteristics of the study subjects (radiological and laboratory findings)
| Control group (n = 1,259) | Case group (death or ICU admission) (n = 473) | Total (n = 1,732) | P-value | |
|---|---|---|---|---|
| Pleural effusion on X-ray | 278 (22.1) | 179 (37.8) | 457 (26.4) | <0.001 |
| Laboratory finding | ||||
| pH | 7.46 (7.43–7.49) | 7.46 (7.41–7.49) | 7.46 (7.43–7.49) | 0.078 |
| pCO2 | 32.5 (28.7–37.1) | 31.5 (27.2–37.6) | 32.2 (28.2–37.2) | 0.133 |
| Lactic acid | 1.43 (1.11–1.93) | 2.07 (1.41–3.05) | 1.56 (1.16–2.22) | < 0.001 |
| Procalcitonin | 0.21 (0.1–0.66) | 0.53 (0.21–2.5) | 0.3 (0.12–1.07) | < 0.001 |
| C-reactive protein | 7.86 (2.98–15.1) | 11.45 (5.39–20.02) | 8.78 (3.63–16.5) | < 0.001 |
| WBC | 9.64 (7.09–13.5) | 10.08 (6.29–15.15) | 9.71 (6.91–13.8) | 0.458 |
| Segmented neutrophils | 77.4 (69–84.3) | 81.05 (69.9–86.5) | 78.5 (69.1–85) | 0.002 |
| ANC | 7.42 (5–11.0) | 8.08 (4.47–12.14) | 7.54 (4.89–11.2) | 0.385 |
| Hemoglobin | 12.6 (11.2–13.9) | 11.2 (9.7–12.8) | 12.3 (10.7–13.7) | < 0.001 |
| Platelet | 223 (169–286.5) | 206 (133–307) | 220 (163–290) | 0.010 |
| BUN | 14.5 (10.6–20.7) | 19.4 (12.8–31.6) | 15.4 (11.1–23.3) | < 0.001 |
| Creatinine | 0.83 (0.67–1.06) | 0.93 (0.67–1.43) | 0.85 (0.67–1.13) | < 0.001 |
| Glucose | 125 (109–159) | 136 (114.7–174) | 128 (110–163.5) | < 0.001 |
| Potassium (K+) | 4.2 (3.9–4.5) | 4.3 (3.9–4.8) | 4.2 (3.9–4.6) | < 0.001 |
| PT (INR) | 1.09 (1.02–1.18) | 1.17 (1.07–1.31) | 1.11 (1.03–1.22) | < 0.001 |
| Protein | 6.5 (6–7) | 6.2 (5.5–6.8) | 6.4 (5.9–6.9) | < 0.001 |
| Albumin | 3.8 (3.4–4.2) | 3.3 (3–3.8) | 3.7 (3.3–4.1) | < 0.001 |
| Bilirubin | 0.8 (0.6–1.1) | 0.9 (0.6–1.3) | 0.8 (0.6–1.1) | 0.001 |
| D-dimer | 1.36 (0.68–2.48) | 2.60 (1.33–4.80) | 1.78 (0.82–3.28) | < 0.001 |
| TCO2 | 20.8 (18.7–22.8) | 20.4 (18.0–23.1) | 20.7 (18.5–23) | 0.540 |
| NT-pro BNP | 984 (213.3–3,120) | 1,797 (767.5–5,882) | 1,305 (299.3–3,933) | 0.005 |
Values are presented as number (%) or median (interquartile range).
ICU, intensive care unit; pCO2, partial pressure of carbon dioxide; WBC, white blood cell; ANC, absolute neutrophil count; BUN, blood urea nitrogen; PT, prothrombin time; INR, international normalized ratio; TCO2, total carbon dioxide; NT-pro BNP, N-terminal pro b-type natriuretic peptide.