Fig. 4
Facial surface pressures (N/cm2) (average for all six sensors, nose bridge and chin region) 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 a peak-inspiratory pressure of 15 cmH2O and a positive end-expiratory pressure of 5 cmH2O. The boxplots and error-bars depict median/IQR and range, respectively. *CM versus SUsmall, SUlarge, Sismall, Silarge and SPRsmall (p < 0.05); **SPRlarge versus SUsmall and Sismall (p < 0.05)