Table 1.

Clinical data of the subject population

Parameter	Healthy individuals (n=77)	Severe pneumonia (n=88)	P-value
Gender (male/female)	40/37	56/32	0.129
Age	5.97±1.69	6.25±1.53	0.274
BMI	22.01±2.4	22.22±2.12	0.546
WBC (109/L)	9.71±1.71	10.20±2.17	0.114
Neutrophils	3.84±1.12	15.38±3.05	<0.001
CRP (mg/L)	3.45±1.35	12.80±1.68	<0.001
Lactate dehydrogenase (U/L)	240.71±43.48	301.68±86.80	<0.001
Lymphocyte (109/L)	2.56±0.61	3.00±2.13	0.084
PCT (ng/mL)	0.14±0.07	2.05±0.80	<0.001
Delay from symptom onset to hospital admission
≥5 days	-	34	-
<5 days	-	54	-

Note: BMI, body mass index; WBC, white blood cell; CRP, C-reactive protein; PCT, procalcitonin; data are expressed as n or mean ± standard deviation.