Fig. 3

A Change in Work of Breathing from supine to prone position. Individual patient measurements are represented by dots (blue representing supine and red prone position, respectively), thin lines connect pairs of individual patient measurements (supine—prone), and thick horizontal lines display the median. Significance levels: P value ≥ 0.05—NS, < 0.05—*, < 0.01—**, < 0.001—***. B Correlation between the change in Work of Breathing from supine to prone position and its respective value in supine position. The scatter-plot represents individual patient measurement-pairs, the black line displays the fitted linear regression, and the shaded gray area depicts its 95% Confidence Interval. ρ—Pearson correlation coefficient, p—P value