Table 2.

Clinical and demographic characteristics of COVID‐19 patients and controls, parameters described as mean ± SD or number (percentage%)

Parameter evaluated	COVID‐19, N (%) or (mean ± SD)	Controls, N (%) or (mean ± SD)	p value
Age (year)	55.24 ± 14.03	53.85 ± 15.38	.124
Gender (female/male)	123/194	152/165	.239
WBC count (×109/L)	9.31 ± 4.62	8.16 ± 5.83	<.001 *
Plt count (×109/L)	246.93 ± 97.42	273.13 ± 73.67	<.001 *
Lymph count (×109/L)	0.99 ± 0.54	2.90 ± 2.54	<.001 *
Neut count (×109/L)	7.73 ± 4.41	4.51 ± 2.89	<.001 *
CRP (mg/L)	15.20 ± 4.53	4.28 ± 0.66	<.001 *
ESR (mm/h)	49.68 ± 23.25	13.23 ± 7.10	<.001 *
NLR (index)	10.00 ± 7.84	1.92 ± 1.93	<.001 *
PLR (index)	313.14 ± 218.21	114.63 ± 51.64	<.001 *
SII (index)	2517.20 ± 2226.21	523.78 ± 476.76	<.001 *
SpO2 (%)	84.97 ± 8.28	98.60 ± 96.40	<.001 *
LDH (IU/L)	709.91 ± 309.36	229.11 ± 50.82	<.001 *
Density pattern
No lesion	8 (2.5)	317 (100.0)	‐
GGO	163 (51.4)	0
Consolidation	39 (12.3)	0
Mixed	107 (33.8)	0
Lesion location
No lesion	8 (2.5)	317 (100.0)	‐
Right lateral	44 (13.9)	0
Left lateral	31 (9.8)	0
Bilateral	234 (73.8)	0
Disease form
Asymptomatica	0	317 (100.0)	‐
Nonsevere	114 (36.0)	0
Severe/critical	203 (64.0)	0
Status
Deceased	26 (8.2)	0	‐
Survived	291 (91.8)	317 (100.0)

Abbreviations: COVID‐19, coronavirus 2019; CRP, C‐reactive protein; ESR, erythrocyte sedimentation rate; GGO, grand glass opacity; LDH, lactate dehydrogenase; Lymph, lymphocyte; Neut; neutrophil; NLR, neutrophil/lymphocyte ratio; PLR, platelet/lymphocyte ratio; Plt, platelet; SII, systemic immune‐inflammation index; SpO₂, blood oxygen saturation levels measured by pulse oximetry; WBC, white blood cell.

^* p < .05 (bolded p values) was considered statistically significant.

^a Asymptomatic with negative RT‐PCR test.