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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