Software for interpreting pulmonary function
GrowingLungs software for interpreting spirometric test results
In 2009 facilities became available to describe the pattern of pulmonary function from childhood to old age using smoothing splines. At the same time account could be taken of the fact that the variability in predicted values is age dependent, being appreciably larger in young children and people of old age than in between these ages. Finally corrections can be made for non-normal distributions. These sets of predicted values were pioneered by the Institute of Child Health, University College London, in a collaborative project (The Asthma UK Collaborative Initiative). The prediction equations cover FEV1, FVC, FEV1/FVC and FEF25-75% in Caucasians aged 3-80 yr, and for FEV0.75 in children aged 3-16 yr.