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Table 5 Collapsibility of the responder group before and after MAD treatment (%)

From: Efficacy and mechanism of mandibular advancement devices for persistent sleep apnea after surgery: a prospective study

Respiratory status Plane Before MAD After MAD P value
Deep inspiration NP 50.9 ± 69.4 47.5 ± 74.3 0.500
VP 65.7 ± 48.5 6.5 ± 132.3 0.500
GP 10.2 ± 28.1 −187.2 ± 26.4 0.123
EP 20.6 ± 44.5 −72.3 ± 8.5 0.244
Sleep apnea /hypopnea NP 7.4 ± 91.2 −20.0 ± 101.3 0.591
VP 83.3 ± 21.8 46.5 ± 27.1 0.005
GP 39.8 ± 39.1 −22.9 ± 73.2 0.031
EP −41.6 ± 101.6 −150.1 ± 176.9 0.066
  1. Abbreviations: A-P anterior-posterior diameter, NP nasopharynx, VP velopharynx, GP glossopharynx, EP epiglopharynx