Overall (N=516) | Dead (N=120) | Alive (N=396) | P value | |
Laboratory findings | ||||
PaO2/FiO2, median (IQR) | 269 (217–319) | 226 (169–271) | 281 (232–335) | <0.001 |
<200, N (%) | 101 (19.6) | 42 (35.0) | 59 (15.0) | <0.001 |
≥200, N (%) | 415 (80.4) | 78 (65.0) | 337 (85.1) | |
Haematocrit, % median (IQR) | 41 (38–44) | 39 (35–43) | 42 (39–44.75) | <0.001 |
Haemoglobin, g/L median (IQR) | 130 (117–143) | 129 (117–141) | 133 (122–143) | 0.203 |
WBC, (×109/L) median (IQR) | 6.31 (5–9) | 7.11 (5–10.23) | 6 (4.98–8.47) | 0.009 |
Lymphocytes, (×109/L) median (IQR) | 0.90 (0.70–1.24) | 0.77 (0.70–1.07) | 0.90 (0.70–1.24) | <0.001 |
Lymphocytopaenia, N (%) | 316 (61) | 85 (71) | 231 (58) | 0.011 |
Platelets, (×109/L) median (IQR) | 182 (142–234) | 156 (117–218) | 187 (152–238) | 0.001 |
ALT, U/L median (IQR) | 31 (19–51) | 26 (16–42) | 32 (19–58) | 0.004 |
AST, U/L median (IQR) | 46 (30–69) | 50 (35–71) | 45 (28–69) | 0.181 |
Serum creatinine, mg/dL median (IQR) | 0.94 (0.79–1.22) | 1.23 (0.92–1.91) | 0.90 (0.79–1.13) | <0.001 |
CPK, U/L median (IQR) | 110 (64–228) | 130 (60–208) | 108 (64–208) | 0.085 |
LDH, U/L median (IQR) | 351 (268–480) | 473 (338–610) | 335 (266–437) | <0.001 |
CRP, mg/L median (IQR) | 94 (44.3–161.8) | 138 (85–188) | 77 (37–152) | <0.001 |
Imaging | N=486 | N=114 | N=372 | |
Chest X-ray | ||||
Negative, N (%) | 20 (4.1) | 2 (1.8) | 18 (4.8) | 0.053 |
Consolidation, N (%) | 67 (13.8) | 12 (10.5) | 55 (14.8) | |
Interstitial, N (%) | 346 (71.2) | 81 (71.1) | 265 (71.2) | |
Mixed, N (%) | 53 (10.9) | 19 (16.7) | 34 (9.1) |
Percentages in round brackets are calculated for numbers in columns for all dichotomous variables
ALT, alanine aminotransferase; AST, aspartate aminotransferase; CPK, creatine phosphokinase; CRP, C reactive protein; LDH, lactate dehydrogenase; WBC, white blood cell count.