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Abstract
A systematic review was performed (i) to describe the reported overall rate of progression
of CF lung disease quantified as FEV1%predicted decline with age, (ii) to summarise
identified influencing risk factors and (iii) to review methods used to analyse CF
lung disease progression data. A search of publications providing FEV1%predicted values
over age was conducted in PUBMED and EMBASE. Baseline and rate of FEV1%predicted decline
were summarised overall and by identified risk factors. Thirty-nine studies were included
and reported variable linear rates of lung function decline in patients with CF. The
overall weighted mean FEV1%predicted over age was graphically summarised and showed
a nonlinear, time-variant decline of lung function. Compared to their peers, Pseudomonas
aeruginosa infection and pancreatic insufficiency were most commonly associated with
lower baseline and more rapid FEV1%predicted declines respectively. Considering nonlinear
models and drop-out in lung disease progression, analysis is lacking and more studies
are warranted.