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Table 1 Clinical and laboratory findings according to age

From: Difference of clinical features in childhood Mycoplasma pneumoniae pneumonia

Age groups

≤2 y

3-5 y

≥6 y

P

 

(n = 29)

(n = 81)

(n = 81)

 

Clinical characteristics

    

Age (y)

2.0 ± 0.7

4.2 ± 0.8

8.3 ± 2.3

<0.001

Duration of fever (d)

    

   Before admission

3.1 ± 2.3

3.6 ± 2.8

4.2 ± 2.3

0.09

   Total duration

4.8 ± 2.9

5.4 ± 3.3

6.1 ± 2.9*

0.1

   Cases of ≥7 d (n,%)

9 (31)

29 (36)

40 (49)

0.04

Hospitalization (d)

6.9 ± 1.8

6.9 ± 2.3

6.8 ± 2.1

0.9

Pneumonia (n,%)

    

   Bronchopneumonia

23 (79)

48 (59)

25 (31)

<0.001

   Segmental/lobar

6 (21)

33 (41)

56 (69)

<0.001

Laboratory findings

    

Hemoglobin (g/dL)

12.2 ± 0.9

12.1 ± 0.9

12.3 ± 0.9

0.6

Leukocyte (×103//μL)

11.2 ± 7.3

7.9 ± 3.5

7.1 ± 2.40

<0.001

   Neutrophil (%)

47 ± 14

61 ± 14

65 ± 11

<0.001

   Lymphocyte (%)

42 ± 13

29 ± 13

24 ± 9

<0.001

   Monocyte (%)

9 ± 3

8 ± 3

8 ± 3

0.2

Platelet (×103/μL)

319 ± 111

266 ± 91

251 ± 75

0.002

CRP (mg/dL)

1.6 ± 2.9

3.8 ± 4.8

4.1 ± 4.1

0.03

ESR (mm/h)

40 ± 22

44 ± 20

46 ± 21

0.4

Seroconveter (n, %)

16 (55)

35 (43)

35 (43)

0.4

  1. * P = 0.04, compared to the ≤2 y group
  2. Number of cases that had the duration of fever ≥7 days.
  3. Number of patients who showed negative on the initial examination, and converted to positive on the second examination by Serodia Myco II.