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Receiver operating characteristic (ROC) curves (area under the curve (AUC) (95% CI)) for FACED (forced expiratory volume in 1 s, age, chronic colonisation by Pseudomonas aeruginosa, radiological extension and dyspnoea) and E-FACED (FACED plus exacerbations) for each year of follow-up. a) year 1; b) year 2; c) year 3; d) year 4; e) year 5.
