Table 2 Demographic and clinical features in PBB with or without airway deformity.

From: Clinical characteristics of protracted bacterial bronchitis in Chinese infants

Characteristics no airway deformity (n = 28), n (%) airway deformity (n = 22) n (%) p
mean age [months] 12 (7.25–16.75) 8 (5–10) <0.05*
gender
 male 23 (82.1) 20 (90.9) >0.05
 female 5 (17.9) 2 (9.1) >0.05
symptom    
 cough 28 (100) 22 (100) >0.05
 wheezing 23 (82.1) 20 (90.9) >0.05
 stridor 0 (0) 2 (28.6) <0.05*
phase of cough
 in the morning 6 (21.4) 2 (9.1) >0.05
 at night 5 (17.9) 3 (13.6) >0.05
 both day and night 17 (60.7) 15 (68.2) >0.05
 post-activity 0 (0) 2 (9.1) >0.05
 median duration of cough [days] 9.1 ± 13.7 11.3 ± 19.6 >0.05
physical examination
 lung wheezing rales 23 (82.1) 18 (79.6 ) >0.05
 lung moist rales 11 (39.2) 12 (9.3) >0.05
cellularity of BALF
 neutrophil (%) 26.0 ± 32.15 33.3 ± 27.6 >0.05
 lymphocyte (%) 7.2 ± 6.4 9.1 ± 6.6 >0.05
 macrophage (%) 64.2 ± 34.2 56.9 ± 31.0 >0.05
 eosinophil (%) 2.6 ± 13.2 0.60 ± 2.0 >0.05
 positive bacterial cultures of BALF 11 (39.3) 8 (36.4) >0.05
 Streptococcus pneumoniae 5 (17.9) 4 (18.2) >0.05
 Haemophilus influenzae 5 (17.9) 1 (4.5) >0.05
 E. coli 1 (3.6) 1 (4.5) >0.05
 Andenteroaerogen 0 (0) 1 (4.5) >0.05
 Filamentous fungi 0 (0) 1 (4.5) >0.05
immunoglobulins (g/l)
 IgA 0.3 ± 0.3 0.3 ± 0.3 >0.05
 IgG 5.4 ± 2.0 6.0 ± 2.6 >0.05
 IgM 1.2 ± 0.6 0.9 ± 0.4 >0.05
lymphocyte subsets (%)
 CD3+ 60.0 ± 10.7 58.3 ± 13.5 >0.05
 CD3+CD4+ 35.1 ± 9.1 34.2 ± 12.5 >0.05
 CD4+CD8+ 22.0 ± 7.6 21.9 ± 7.6 >0.05
 CD3CD19+ 29.1 ± 10.9 26.8 ± 11.4 >0.05
 CD3CD16+CD56+ 9.0 ± 6.3 12.9 ± 9.1 >0.05
 CD19+CD23+ 14.0 ± 6.3 13.6 ± 6.1 >0.05
  1. P-values < 0.05* were considered statistically significant.