Fig. 3From: Lung function trajectories in children with post-prematurity respiratory disease: identifying risk factors for abnormal growthSpirometry trends for study population through age 12. Lines represent best fit trend over time by locally estimated scatterplot smoothing; grey area is 95% CI. BPD Severity by NHLBI Workshop Criteria (O2 for 28 days + respiratory support at 36 weeks)Back to article page