Table 1 Characteristics and clinical features of patients with PBB and no PBB controls.

From: Clinical characteristics of protracted bacterial bronchitis in Chinese infants

Characteristics PBB group (n = 50), (%) No PBB group (n = 16), (%) p
mean age [months] 10.00 (5.75–14) 12 (7–18.5) >0.05
gender
 male 43 (86) 12 (75) >0.05
 female 7 (14) 4 (25) >0.05
symptoms
 wet cough 50 (100) 16 (100) >0.05
 wheezing 45 (90) 10 (62.5) <0.01***
 stridor 2 (4) 1 (6.25) >0.05
phase of cough
 morning 8 (16) 4 (25) >0.05
 night 8 (16) 4 (25) >0.05
 both day and night 32 (64) 7 (43.8) <0.05*
 post-activity 2 (4) 1 (6.25) >0.05
 median duration of cough [weeks] 10.0 ± 16.4 15.1 ± 1 6.3 >0.05
physical examination
 wheezing rales 41 (82) 11 (68.7) >0.05
 moist rales 23 (46) 9 (56.2) >0.05
  1. P-values < 0.05* and <0.01*** were considered statistically significant.