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.