Table 6. Laboratory values on admission in patients with COVID-19 by intubation and mortality.

Variables	All patients	Intubation	No intubation	P value	Patients died	Patients survived	P value
Lymphocytes (%)	10.8±8.6	8.9±8.3	13.1±8.6	0.10	9.4±8.4	11.9±8.7	0.33
CRP (mg/dL)	14.6±9.3	16.4±9.5	12.3±8.6	0.13	14.5±7.0	14.6±10.8	0.96
PCT (ng/mL)	0.4 (0.2; 0.8)	0.4 (0.2; 0.9)	0.4 (0.2; 0.8)	0.83	0.4 (0.2; 0.6)	0.4 (0.2; 0.9)	0.29
IL-6 (pg/mL)	147 (55; 355)	183 (89; 487)	99 (33; 175)	0.021	191 (139; 484)	93 (26; 183)	0.009
D-dimer (µg/mL)	3.5±4.0	3.8±3.2	3.0±4.9	0.52	3.7±3.1	3.3±4.6	0.77
hs-troponin (pg/mL)	38 (21; 93)	34 (22; 72)	57 (14; 149)	0.76	35 (25; 61)	51 (12; 160)	0.82
NT-proBNP (pg/mL)	1,681 (426; 3,965)	1,301 (379; 3,368)	1,851 (469; 5,517)	0.09	1,082 (279; 2,886)	1,851 (727; 5,517)	0.09
LDH (U/L)	538 (424; 688)	629 (449; 771)	470 (410; 545)	0.026	640 (537; 796)	449 (416; 607)	0.008
Creatinine (mg/dL)	1.7±1.8	1.6±2.0	1.9±1.9	0.56	1.4±1.3	2.0±2.3	0.29

Data were presented as mean ± standard deviation or median days (IQR) if not otherwise specified. COVID-19, coronavirus disease 2019; CRP, C-reactive protein; PCT, procalcitonin; IL-6, interleukin-6; hs, high sensitive; NT-proBNP, N-terminal pro-B-type natriuretic peptide; LDH, lactate dehydrogenase; IQR, interquartile range.