Table 3 Admission characteristics of children with Mycoplasma pneumoniae  pneumonia in the modeling cohort

Age (years)

4.75(3.00 ~ 6.00)

6.00 (5.16 ~ 7.00)

< 0.001

Fever days

3.00 (1.00 ~ 5.00)

6.00 (4.00 ~ 7.00)

< 0.001

WBC (10⁹/L)

8.35 (6.58 ~ 11.19)

7.48 (5.84 ~ 10.13)

0.022

PMNs %

55.17 ± 15.34

63.72 ± 13.41

< 0.001

L %

35.39 ± 14.10

26.58 ± 12.26

< 0.001

PMNs (10⁹/L)

4.62 (3.26 ~ 6.61)

4.71 (3.22 ~ 7.22)

0.506

L (109/L)

2.46 (1.73 ~ 3.58)

2.36 (1.74 ~ 3.50)

< 0.001

Hb (g/L)

129.11 ± 9.91

129.67 ± 10.33

0.582

PLT (10⁹/L)

312.25 ± 107.62

275.12 ± 96.86

0.001

CRP (ug/ml)

2.93 (0.75 ~ 7.34)

7.50 (3.65 ~ 21.08)

< 0.001

ALT (U/L)

14.80 (11.40 ~ 18.90)

18.20 (14.15 ~ 29.00)

< 0.001

AST (U/L)

31.40 (26.30 ~ 39.80)

30.90 (23.60 ~ 42.50)

0.937

LDH (U/L)

301.00 (257.60 ~ 359.00)

311.90 (265.45 ~ 446.15)

0.030

CK (U/L)

90.05 (59.50 ~ 129.00)

80.00 (52.95 ~ 141.00)

0.424

CK-MB (U/L)

24.00 (16.40 ~ 36.10)

20.00 (12.05 ~ 35.10)

0.015

D-d (mg/L)

0.38 (0.25 ~ 0.57)

0.89 (0.50 ~ 1.75)

< 0.001

Chest imaging score

411

131

< 0.001

 1

316(76.88%)

55(41.98%)

 2

71(17.27%)

25(19.08%)

 3

19(4.62%)

19(14.50%)

 4

5(1.22%)

32(24.43%)