Table 4

Linear regression models of FEV1% predicted among white patients

Number of patients in modelAdjusted USA–UK effect (95% CI)
Model 1: adjusted for age at encounterN=22 8673.31 (2.65 to 3.96)
Model 2: adjusted for age at encounter, gender, age at diagnosis, pancreatic sufficiency and genotypeN=22 5913.03 (2.37 to 3.69)
Model 3: adjusted for age at encounter, gender, age at diagnosis, pancreatic sufficiency, genotype, chronic Pseudomonas infection, chronic MSSA infection, Burkholderia cepacia infection and MRSA infectionN=22 2763.85 (3.17 to 4.53)
Model 3 stratified by age group
 <12 yearsN=46817.62 (6.24 to 9.00)
 12–17 yearsN=50786.65 (5.21 to 8.08)
 18–23 yearsN=45785.20 (3.64 to 6.75)
 24 years +N=79390.26 (−0.88 to 1.39)
  • Results are presented as difference between the USA–UK of FEV1% predicted (95% CI).

  • MRSA, methicillin-resistant Staphylococcus aureus; MSSA, methicillin-sensitive Staphylococcus aureus.