Fig. 3
Air leak percentages (Lair) for the commercial mask (CM) and each personalized non-invasive ventilation (NIV) mask (silicone urethane (SU) small and large; silicone (Si) small and large; and soft photopolymer resin (SPR) small and large) during pediatric NIV bench test simulation at three different ventilation pressure steps (peak-inspiratory pressure/positive end-expiratory pressure: 15/5 cmH2O, 20/5 cmH2O and 25/5 cmH2O). The boxplots and error-bars depict median/IQR and range, respectively. *CM versus SUsmall, SUlarge, Sismall, Silarge, SPRsmall and SPRlarge (p < 0.05); **SPRsmall versus Sismall and Silarge (p < 0.05); ***SPRsmall versus Sismall (p < 0.05); ****SPRlarge versus Sismall and Silarge (p < 0.05) as analyzed by Friedman non-parametric test with post hoc testing