Table 1 Comparison of clinical data between the groups of initial IVIG-response and IVIG-resistance in KD

Male

271 (57.5)

43 (54.4)

0.625

Age, months

24.0 (13.0–42.0)

28.0 (14.0–54.0)

0.016

BMI, kg/m²

15.3 (14.5–16.0)

15.1 (14.3–16.2)

0.487

 Rash

365 (77.5)

67 (84.8)

0.182

 Extremity changes

286 (60.7)

41 (51.9)

0.173

 Conjunctivitis

431 (91.5)

71 (89.9)

0.666

 Oral changes

599 (91.0)

99 (94.3)

0.347

 Cervical lymphadenopathy

193 (41.0)

42 (53.2)

0.049

 Fever duration before initial IVIG, days

5.0 (5.0–6.0)

5.0 (5.0–6.0)

0.313

 Incomplete KD

173 (36.7)

25 (31.6)

0.054

 CALs

41/463 (8.9)

11/79 (13.9)

0.153

 WBC, ×10⁹/L

13.3 (10.6–16.8)

14.3 (10.6–17.5)

0.718

 Hemoglobin, g/L

109.0 (101.0–116.0)

107.0 (99.0–114.0)

0.346

 CRP, mg/L

70.0 (41.0–106.0)

90.0 (62.0–144.0)

0.001

 ESR, mm/h

64.0 (46.0–81.0)

67.0 (47.0–96.0)

0.242

 AST, U/L

31.0 (25.0–48.0)

34.0 (25.0–65.0)

0.485

 ALT, U/L

35.0 (21.0–78.0)

53.0 (27.0–120.0)

0.085

 ALB, g/L

38.0 (35.0–41.0)

36.0 (32.0–39.0)

<0.001

 TBil, μmol/L

6.0 (4.0–8.0)

7.0 (4.0–15.0)

<0.001

 Na⁺, mmol/L

137.0 (135.0–139.0)

135.0 (133.0–137.0)

<0.001

 NLR

2.63 (1.71–4.80)

4.83 (2.92–8.65)

<0.001

 PLR

103.9 (74.8–151.1)

137.2 (93.9–235.0)

<0.001

 CAR

1.86 (1.04–2.88)

2.60 (1.67–4.27)

<0.001