BPI-ANCA Provides Additional Clinical Information to Anti-Pseudomonas Serology: Results from a Cohort of 117 Swedish Cystic Fibrosis Patients

Figure 2

Identifying chronically colonized patients. ROC-curves of IgA BPI-ANCA and three different anti-P. aeruginosa serologies comparing their ability to identify patients with chronic P. aeruginosa colonization (). Controls were patients belonging to Leeds class 3 (free from earlier P. aeruginosa) or 4 (never had P. aeruginosa) (). Leeds 2 patients (intermittently colonized, ) were omitted in this analysis. All tests were useful for this purpose, Exotoxin A presenting the best area under curve with 0.929 (CI: 0.876–0.982).