Table 3 Baseline blood and biochemical indices of the COVID-19 patients

White blood cells, G/L, \(\overline{{\text{X}} }\)± SD

8.9 ± 7.1

10.7 ± 6.5

0.01

Platelets, G/L, \(\overline{{\text{X}} }\)± SD

239.5 ± 106.7

200.8 ± 93.6

0.001

Neutrophils, %, \(\overline{{\text{X}} }\) ± SD

74.9 ± 13.6

84.1 ± 15.1

 < 0.001

D-dimer, ng/ml, \(\overline{{\text{X}} }\)± SD

1619.8 ± 6480.2

5237.8 ± 14542.7

0.008

Ure, mmol/l, \(\overline{{\text{X}} }\)± SD

5.6 ± 4

9.8 ± 7.8

 < 0.001

Creatinine, µmol/l, \(\overline{{\text{X}} }\)± SD

79.3 ± 21.7

111.9 ± 93.7

 < 0.001

CRP, ng/ml, \(\overline{{\text{X}} }\)± SD

52.3 ± 61.8

100.2 ± 73.5

 < 0.001

PCT, pg/ml, \(\overline{{\text{X}} }\)± SD

0.54 ± 2.3

0.68 ± 1.2

0.66

IL-6, pg/ml, \(\overline{{\text{X}} }\)± SD

116.4 ± 187.8

182.9 ± 311.2

0.24

Pneumonia, yes, n (%)

222 (90.2%)

126 (97.7%)

0.008