Fig. 1From: Obstructive sleep apnoea is associated with dynamic intra-thoracic central airway collapse: results of a 10-year multi-centre retrospective analysisScatterplot demonstrating the association between dynamic intra-thoracic central airway collapse and overall apnoea-hypopnoea index. Legend: Composite mean percentage dynamic intra-thoracic central airway collapse is on the X axis and overall apnoea-hypopnoea index is on the Y axis, with the unadjusted linear model depicted by the solid black line (Pearson correlation coefficient 0.419 and with p = 0.0010)Back to article page