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Table 1 Clinical characteristics of the study population

From: Blood routine risk factors for coronary artery aneurysm in infants younger than 8 months with Kawasaki disease

Characteristic

<  8 months old (N = 78)

≥ 8 months old CA (N = 86)

P-value

Age (months)

2.5 (1.8; 4.6)

27.5 (17.0; 36.0)

< 0.001

Male sex

46 (59.0%)

50 (60.5%)

0.914

Incomplete KD

29 (37.2%)

4 (4.7%)

< 0.001

Erythema and induration at the BCG inoculation site

19 (24.4%)

3 (3.5%)

< 0.001

Bilateral conjunctival injection,

57 (73.1%)

82 (95.3%)

< 0.001

Oral changes

60 (76.9%)

81 (94.2%)

0.001

Unilateral cervical lymphadenopathy

52 (66.7%)

81 (94.2%)

< 0.001

Extremity changes

46 (59.0%)

69 (80.2%)

0.030

Skin rash

59 (37.2%)

66 (4.7%)

0.868

CAA

37 (47.4%)

13 (15.1%)

< 0.001

Persistent CAA

7 (9.0%)

2 (2.3%)

0.128

Days of fever before IVIG infusion

5 (4;6)

6 (5; 7)

< 0.001

IVIG resistance

9 (11.5%)

5 (5.9%)

0.191

Peak WBC count (109/L)

18.16 (14.45; 23.88)

16.71 (14.13; 20.0)

0.156

Peak percentage neutrophils

0.65 (0.58; 0.74)

0.77 (0.70; 0.82)

< 0.001

Peak NLR

2.74 (1.85; 3.81)

4.61 (3.16; 6.77)

< 0.001

NLR after IVIG

0.59 (0.32; 1.30)

0.70 (0.42; 1.53)

0.316

Peak hemoglobin (g/L)

85.95 ± 10.11

103.44 ± 10.89

< 0.001

Peak platelet count (109/L)

693.0 (572.0; 832.5)

443.5 (367.3; 538.8)

< 0.001

Peak CRP (mg/L)

84.0 (50.5; 113.2)

70.6 (35.9; 118.4)

0.140

Laboratory data on the 1st day

 WBC count (109/L)

13.16 (9.21;17.05)

14.80 (12.44; 18.35)

0.028

 Percentage neutrophils

0.62 (0.49; 0.66)

0.72 (0.65; 0.80)

< 0.001

 NLR

2.11 (1.37: 2.86)

3.53 (2.66; 5.95)

< 0.001

 Hemoglobin (g/L)

113.00 (105.00; 126.00)

116.67 ± 14.62

0.012

 Platelet count (109/L)

336.5 (255.5; 414.0)

257.0 (222.0; 315.0)

< 0.001

 CRP (mg/L)

39.5 (15.5; 66.6)

36.0 (18.0; 56.5)

0.739

Laboratory data on the 5th day

 WBC count (109/L)

14.08 (9.46; 18.33)

13.64 (10.95; 16.39)

0.952

 Percentage neutrophils

0.50 (0.34; 0.67)

0.70 (0.61; 0.77)

< 0.001

 NLR

1.38 (0.67; 2.88)

3.38 (2.01; 5.30)

< 0.001

 Hemoglobin (g/L)

100.00 (88.00; 108.00)

113.00 (104.50; 119.00)

< 0.001

 Platelet count (109/L)

404.0 (293.0; 566.0)

303.0 (257.8; 370.0)

< 0.001

 CRP (mg/L)

50.0 (34.7; 96.7)

58.2 (28.8; 109.0)

0.662