Table 3.

Laboratory variables of all cases on the day of intubation.

	Survivors (n=52)	Non-survivors (n=82)	p value
Hemoglobin, g/dL	11.3 (9.7-13.5)	10.5 (9.3-12.6)	0.085
White blood cell count, cells/μL	9.0 (6.4-11.8)	13.3 (9.7-17.0)	<0.001**
Platelet count, cells/μL	265 (204-395)	219 (129-290)	0.001*
Neutrophil, cells/μL	7.3 (4.9-9.7)	12.1 (8.0-15.6)	<0.001**
Lymphocyte, cells/μL	0.9 (0.7-1.3)	0.5 (0.3-1.0)	<0.001**
MPV, fL	10.0 (9.3-10.6)	10.3 (9.6-11.4)	0.064
Creatinine, mg/dL	1.0 (0.8-1.4)	1.3 (0.9-2.1)	0.032*
Urea, mg/dL	44 (31-80)	77 (43-123)	<0.001**
AST, U/L	26 (17-53)	39 (25-61)	0.021*
ALT, U/L	34 (17-81)	29 (19-67)	0.735
C-reactive protein, mg/dL	38.0 (9.6-77.1)	123.5 (72.0-177.0)	<0.001**
D-dimer, ng/mL	1090 (616-2340)	1920 (1230-4830)	<0.001**
Procalcitonin, ng/mL	0.12 (0.05-0.95)	0.89 (0.29-3.10)	<0.001**
Lactate dehydrogenase, U/L	543 (409-776)	864 (548-1270)	<0.001**
Ferritin, ng/mL	350 (161-720)	759 (458-2000)	<0.001**
Troponin, ng/mL	12.0 (4.1-114.0)	81.5 (25.9-640.0)	<0.001**
N/LP ratio	2.51 (1.67-5.49)	10.0 (4.94-19.38)	<0.001**

Continuous variables are presented as median values and interquartile ranges (IQRs), and nominal variables as frequencies.

*p<0.05, **p<0.001

Abbreviations: MPV: mean platelet volume; AST: aspartate aminotransferase, ALT: alanine aminotransferase; N/LP: neutrophil to lymphocyte platelet ratio