Table 1

Demographic data and treatment requirements of adult CF patients with chronic infection by unique (group 1) and highly transmissible strains (group 2) of P aeruginosa

Group 1 (n=56)Group 2 (n=22)p value
FEV1=forced expiratory volume in 1 second; FVC=forced vital capacity.
Results expressed as mean (SD) or *median (range).
Age25.6 (7.2)26.6 (7.4)NS
FEV1 (% pred)55.1 (19.3)54.9 (18.0)NS
FVC (% pred)75.4 (19.2)75.3 (20.4)NS
Body mass index21.2 (2.8)20.6 (3.4)NS
Outpatient episodes*10 (2–26)9.5 (3–32)NS
Inpatient episodes*2 (1–6)3 (1–9)0.005
Inpatient days*16 (1–172)39 (7–183)0.003
IV antibiotic days*33 (4–237)60 (17–216)0.01
Respiratory exacerbations6.1 (3.2)8.2 (3.4)0.01