Table 3 BALF cytology and immune function of patients with PBB and controls.

From: Clinical characteristics of protracted bacterial bronchitis in Chinese infants

Characteristics

PBB group (n = 50), n (%)

No PBB group (n = 16), n (%)

p

cellularity of BALF

 neutrophil (%)

29.2 ± 30.2

2.9 ± 3.5

<0.01**

 lymphocyte (%)

8.1 ± 6.5

8.4 ± 4.3

>0.05

 macrophage (%)

61.0 ± 32.7

88.7 ± 3.6

<0.01**

 eosinophil (%)

1.7 ± 9.9

0.00 ± 0.00

>0.05

 positive bacterial cultures of BALF

19 (38)

0 (0)

<0.05*

 airway deformity

22 (44)

10 (62.5)

>0.05

immunoglobulins (g/L)

 IgA

0.3 ± 0.3

0.5 ± 0.6

>0.05

 IgG

5.65 ± 2.3

6.0 ± 2.2

>0.05

 IgM

1.1 ± 0.6

1.2 ± 0.7

>0.05

lymphocyte subsets (%)

 CD3+

59.3 ± 11.9

68.6 ± 4.25

<0.01**

 CD3+CD4+

34.7 ± 10.6

42.5 ± 6.8

<0.01**

 CD4+CD8+

1.9 ± 1.3

2.1 ± 1.0

>0.05

 CD3CD19+

28.1 ± 11.1

23.2 ± 5.05

<0.05*

 CD3CD16+CD56+

10.75 ± 7.8

7.45 ± 3.7

<0.05*

 CD19+CD23+

13.9 ± 6.2

5.4 ± 2.65

<0.01**

  1. P-values < 0.05*, <0.01** were considered statistically significant.