Fig. 4From: Diaphragm thickening fraction predicts noninvasive ventilation outcome: a preliminary physiological studyDTF (A) and respiratory rate/DTF (B) in the NIV success and in the NIV failure group over time; the values displayed are the mean of the measures of the two operators. Patients were censored after endotracheal intubation. Comparisons between groups were performed with 1-way analysis of variance. Each point on the graph represents the mean values, and error bars represent Standard DeviationBack to article page