Differences in air leak between masks for varying continuous positive airway pressure (CPAP) level and mask tightness
| CPAP level cmH2O | |||
| 4 | 8 | 12 | |
| 100 g | No differences | No differences | P>L |
| 350 g | No differences | No differences | P>SM |
| 600 g | C>P | P, C>SM | P, C>SM |
P: petite; L: large; SM: small/medium; C: custom. Mask pairings were observed to have significantly different mask air leaks when p<0.05 in post hoc analysis.