Table 2.
Laboratory findings of the study population at admission stratified by gender (N = 701)
| Female (N = 214) | Male (N = 487) | |||||
| Reference range | N | N | P-value | |||
| Red blood cell count (×106/μl) | 4.0–5.2 | 212 | 4.28 (3.77–4.69) | 482 | 4.55 (4.10–5.93) | <0.001 |
| Haemoglobin (g/dl) | 12.0–16.0 | 211 | 12.4 (10.8–13.7) | 480 | 13.6 (12.2–14.7) | <0.001 |
| Haematocrit (%) | 37.0–47.0 | 211 | 37.5 (32.9–40.3) | 479 | 39.8 (36.1–43.2) | <0.001 |
| White blood cell count (per μl) | 4000–10 800 | 212 | 6610 (4715–9003) | 482 | 6945 (5303–9598) | 0.062 |
| Lymphocytes absolute (per μl) | 900–4000 | 189 | 1000 (710–1510) | 436 | 900 (598–1183) | <0.001 |
| Platelets count- (×103/μL) | 130–400 | 211 | 214 (168–294) | 480 | 201 (151–262) | 0.021 |
| Serum creatinine (mg/dl) | 0.60–1.00 | 207 | 0.80 (0.68–1.08) | 478 | 1.02 (0.88–1.38) | <0.001 |
| eGFR (CKD-EPI) ml/min | >80 | 207 | 74 (49–91) | 478 | 76 (52–90) | 0.931 |
| Serum sodium (mEq/l) | 136–145 | 209 | 138 (136–141) | 475 | 138 (135–140) | 0.069 |
| Serum potassium (mEq/l) | 3.4–4.5 | 209 | 3.9 (3.5–4.3) | 472 | 4.0 (3.6–4.4) | 0.047 |
| Serum chloride (mEq/l) | 98–107 | 154 | 101 (99–104) | 356 | 100 (97–103) | 0.071 |
| CRP (mg/dl) | <5.0 | 198 | 36 (8–92) | 455 | 67 (18–150) | <0.001 |
| Procalcitonin (ng/ml) | <0.5 | 98 | 0.10 (0.05–0.26) | 206 | 0.21 (0.09–0.85) | <0.001 |
| Ferritin (μg/l) | 30–400 | 105 | 396 (221–640) | 231 | 915 (504–1729) | <0.001 |
| D-dimer (ng/ml) | <232 | 144 | 871 (445–1864) | 324 | 924 (468–2055) | 0.746 |
| Interleukin-6 (pg/ml) | <7.00 | 47 | 27 (11–54) | 98 | 50 (19–98) | 0.024 |
| Troponin (elevated) | 179 | 77 (43.0) | 435 | 201 (46.2) | 0.527 | |
| NT-proBNP (pg/ml) | <93 | 59 | 341 (98–875) | 168 | 313 (99–1232) | 0.680 |
| Bilirubin (mg/dl) | <1.2 | 186 | 0.5 (0.3–0.6) | 434 | 0.6 (0.5–0.8) | <0.001 |
| Aspartate transaminase (U/l) | 18–39 | 204 | 31 (21–47) | 469 | 44 (30–69) | <0.001 |
| Alanine transaminase (U/l) | 10–50 | 206 | 23 (16–36) | 470 | 37 (25–59) | <0.001 |
| LDH (U/l) | 135–225 | 163 | 305 (225–455) | 403 | 377 (263–545) | <0.001 |
| Creatine phosphokinase (U/l) | 39–308 | 119 | 79 (41–158) | 258 | 144 (65–355) | <0.001 |
| Serum albumin (g/l) | 45–52 | 110 | 3.2 (2.7–3.6) | 272 | 3.2 (2.8–3.6) | 0.980 |
| INR | 0.9–1.2 | 192 | 1.1 (1.0–1.2) | 439 | 1.1 (1.0–1.2) | 0.330 |
| ABG test pH | 7.37–7.45 | 190 | 7.46 (7.43–7.49) | 428 | 7.47 (7.43–7.50) | 0.339 |
| ABG test lactate (mmol/l) | 0.5–2.2 | 156 | 1.1 (0.8–1.4) | 353 | 1.3 (0.9–1.7) | <0.001 |
Data shown as median (IQR) or count (%).
ABG, arterial blood gas; CKD-EPI, chronic kidney disease epidemiology collaboration formula; CRP, C-reactive protein; eGFR, estimated glomerular filtration rate; INR, international normalized ratio; LDH, lactate dehydrogenase; NT-proBNP, N-terminal fragment of the prohormone brain natriuretic peptide.