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Table 2 Peripheral blood indices’ Results of children with SARS-COV-2

From: Early immune responses and prognostic factors in children with COVID-19: a single-center retrospective analysis

Variables

Overall

Mild

Severe

Critical

P Value

Routine Blood Result

(n = 120)

(n = 101)

(n = 12)

(n = 7)

 

 Hemoglobin, Mean (SD), g/L

124 (14.6)

126.5 (13.5)

119.8 (9.1)

100.0 (13.7)

< 0.001

 Platelet, Mean (SD), ×109/L

260 (99.5)

264.0 (100.9)

253.3 (60.1)

210.6 (129.2)

0.381

 White blood cell, Mean (SD), × 109/L

7.3 (7.9)

7.7 (8.5)

6.0 (2.2)

4.0 (2.5)

0.412

 Red blood cell, Mean (SD), × 109/L

4.6 (0.6)

4.6 (0.5)

4.5 (0.4)

3.6 (0.5)

< 0.001

 Neutrophil, Mean (SD), ×109/L

3.8 (4.9)

3.9 (5.2)

4.0 (2.0)

1.8 (1.6)

0.556

 Lymphocyte, Mean (SD), ×109/L

2.7 (1.5)

2.9 (1.5)

1.5 (0.6)

1.7 (1.4)

0.001

 Monocyte, Mean (SD), ×109/L

0.7 (2.5)

0.8 (2.7)

0.5 (0.3)

0.5 (0.4)

0.909

 Eosinophil, Mean (SD), ×109/L

0.1 (0.2)

0.1 (0.2)

0.0 (0.0)

0.0 (0.0)

0.008

 Basophil, Mean (SD), ×109/L

0.0 (0.0)

0.0 (0.0)

0.0 (0.0)

0.0 (0.0)

0.373

Immune Factor Results

(n = 102)

(n = 86)

(n = 9)

(n = 7)

 

 T, Mean (SD), /μL

2260 (1190)

2499.0 (1113.9)

1233.1 (562.6)

607.7 (585.9)

< 0.001

  Median [Min, Max]

2020 [146, 5610]

2240 [984, 5610]

1190 [543, 2180]

425 [146, 1840]

 

 Th, Mean (SD), /μL

1160 (708)

1290.6 (690.8)

590.2 (249.3)

349.4 (308.6)

< 0.001

  Median [IQR]

1030 [817]

1130 [860.75]

685 [431.5]

297 [298]

 

 Tc, Mean (SD), /μL

941 (604)

1042.5 (590.3)

516.3 (317.1)

233.1 (254.1)

< 0.001

  Median [IQR]

252 [307.5]

310 [306.5]

117 [100.5]

72.0 [149]

 

 NK, Mean (SD), /μL

343 (264)

382.8 (265.5)

157.3 (105.1)

91.0 (83.9)

0.001

  Median [IQR]

523 [474.75]

566 [440.5]

272 [272]

254 [452.5]

 

 B, Mean (SD), /μL

644 (458)

696.0 (461.4)

324.3 (185.9)

422.0 (461.1)

0.026

  Median [IQR]

1.24 [0.688]

1.24 [0.563]

1.12 [0.8]

1.86 [1.72]

 

 Treg, Mean (SD), /μL

176 (95.0)

179.8 (95.4)

120.5 (0.7)

53.0 (NA)

0.297

  Median [IQR]

156 [137.25]

160 [140]

121 [1]

53.0 [NA]

 

 Th/Tc, Mean (SD)

1.39 (0.65)

1.3 (0.6)

1.3 (0.5)

2.0 (1.2)

0.027

  Median [IQR]

4.82 [1.99]

4.81 [1.96]

4.70 [1.51]

7.16 [NA]

 

Cytokine Results

(n = 121)

(n = 101)

(n = 12)

(n = 8)

 

 IL-2, Mean (SD), pg/mL

1.6 (0.7)

1.6 (0.7)

1.5 (0.4)

1.4 (0.3)

0.556

  Median [IQR]

1.47 [0.445]

1.47 [0.44]

1.38 [0.445]

1.40 [0.61]

 

 IL-4, Mean (SD), pg/mL

3.1 (1.8)

3.1 (1.9)

3.2 (1.3)

2.7 (0.8)

0.819

  Median [IQR]

2.62 [1.275]

2.54 [1.31]

2.66 [2.013]

2.76 [0.87]

 

 IL-6, Mean (SD), pg/mL

48.4 (352)

9.9 (16.2)

25.2 (24.5)

569.1 (1337.3)

< 0.001

  Median [IQR]

5.30 [11.255]

4.27 [6.745]

17.7 [18.272]

73.5 [251.828]

 

 IL-10, Mean (SD), pg/mL

24.0 (145)

6.8 (8.2)

9.9 (15.8)

262.1 (536.1)

< 0.001

  Median [IQR]

4.62 [3.795]

4.50 [2.87]

4.92 [3.11]

43.5 [256.065]

 

 TNF-α, Mean (SD), pg/mL

2.2 (2.7)

2.3 (3.0)

1.6 (0.5)

2.1 (1.1)

0.725

  Median [IQR]

1.67 [0.815]

1.67 [0.826]

1.69 [0.743]

1.67 [1.203]

 

 IFN-γ, Mean (SD), pg/mL

31.0 (180)

8.4 (17.7)

58.8 (141.1)

274.6 (664.6)

< 0.001

  Median [IQR]

3.71 [5.7]

3.45 [2.745]

13.2 [27.215]

10.8 [179.778]

 

Other Inflammatory Factor Results

(n = 119)

(n = 99)

(n = 12)

(n = 8)

 

 FERR, Mean (SD), ng/mL

412 (1840)

88.1 (60.5)

198 (109)

3230 (5350)

< 0.001

  Median [IQR]

81.8 [85.80]

68.1 [61.8]

169 [179]

984 [4406]

 

  Missing, no. (%)

38 (31.9%)

36 (36.4%)

2 (16.7%)

0 (0%)

 

 PCT, Mean (SD), ng/mL

1.30 (9.50)

0.217 (0.777)

0.248 (0.193)

15.3 (34.4)

< 0.001

  Median [IQR]

0.060 [0.128]

0.055 [0.05]

0.185 [0.225]

2.10 [8.335]

 

  Missing, no. (%)

7 (5.9%)

7 (7.1%)

0 (0%)

0 (0%)

 

 SAA, Mean (SD), mg/L

51.5 (66.8)

29.1 (47.1)

121 (61.7)

198 (2.60)

< 0.001

  Median [IQR]

5.00 [102.18]

5.00 [24.57]

120 [90.38]

198 [3.67]

 

  Missing, no. (%)

71 (59.7%)

61 (61.6%)

4 (33.3%)

6 (75.0%)

 

 CRP, Mean (SD), mg/L

10.3 (16.7)

6.03 (8.13)

36.0 (32.9)

22.5 (20.0)

< 0.001

  Median [IQR]

5.00 [11.5]

4.00 [7.12]

22.6 [48.48]

13.4 [22.05]

 

  Missing, no. (%)

4 (3.4%)

4 (4.0%)

0 (0%)

0 (0%)