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. 2012 Dec 18;9(3):506–514. doi: 10.4161/hv.23226

Table 3. Study participants.

Group Clinical Status Average Age (months) Gender
M:F
Group 1
CF chronic Pa LRTI
n = 5		 CF children with chronic Pa LRTI (≥ 105 CFU/mL) recovered in BAL samples ≥ 6 mths apart 32.6 1:4
Group 2
CF URT (-)
LRTI(+) to (-)
n = 5		 CF children with prior Pa LRTI (≥ 105 CFU/mL) and subsequent BAL culture negative42 30.2 0:5
Group 3
CF URT(+)
LRTI (-)
n = 5		 CF children with URT colonisation (throat swab positive). BAL culture negative 35.8 1:4
Group 4
CF controls
URT(-)
LRTI (-)
n = 5		 CF children without evidence of Pa LRTI or URT colonisation (BAL and throat swab culture negative) 31.8 3:2
Group 5
Non-CF controls
URT (-)
LRTI (-)
n = 6		 Non-CF children undergoing flexible bronchoscopy to evaluate congenital stridor 15.8 4:2

CFU, colony-forming units; CF, cystic fibrosis; LRTI, lower respiratory tract infection; Pa, Pseudomonas aeruginosa ; URT, upper respiratory tract.