Fig. 4From: Diaphragmatic excursion is correlated with the improvement in exercise tolerance after pulmonary rehabilitation in patients with chronic obstructive pulmonary diseaseReceiver operating characteristic (ROC) curve for baseline DEmax in relation to the response to pulmonary rehabilitation. ROC curve estimates the ability of DEmax to predict a clinically important improvement in 6MWD (> 30 m) after pulmonary rehabilitation (AUC = 0.915, sensitivity = 83% and specificity = 95% at a cut-off point of 44.9 mm of DEmax). AUC area under the curve, 6MWD 6-min walk distance, DEmax maximum diaphragmatic excursionBack to article page