. Author manuscript; available in PMC: 2019 Sep 30.

Published in final edited form as: J Magn Reson Imaging. 2015 Dec 28;44(1):158–167. doi: 10.1002/jmri.25133

TABLE 1.

Comparison of Compliance and P_close among Inhalation and Exhalation of Different Breaths during Sleep^a

	Retropalatal		Retroglossal
	Compliance (P-value)	P_close(P-value)	Compliance (P-value)	P_close(P-value)
Breath 1 inhale	.095±.024(1.000)	−9.06±2.27 (1.000)	.085±.015 (1.000)	−11.18± 2.03 (1.000)

Breath 1 exhale	.098±.014 (0.609)	−9.21±1.95 (0.533)	.084±.020 (0.295)	−11.42 ± 2.53 (0.652)

Breath 2 inhale	.103±.019 (0.162) .	−8.57±1.73 (0.119)	.090±.017 (0.183)	−10.74 ± 2.21 (0.287)

Breath 2 exhale	.101±.022 (0.313)	−8.69±1.50 (0.137)	.088±.013 (0.510)	−10.99 ± 2.27 (0.343)

Data from the first two consecutive breaths within one occlusion were used. Each breath was further divided into the inhale portion and exhale potion. Each listed mean ± SD of compliance and P_close was calculated using data from the corresponding portion and breath only, from a total of 3 (subjects) × 2 (slices) × 3 (occlusions) = 18 occlusions. All data were acquired from the adolescent OSA patients during sleep (two subjects who did not fall asleep were excluded). In each column, the p-values were calculated against the inhale portion of breath 1. The unit for compliance is cm H₂O⁻¹ (normalized area/pressure), and the unit for P_close is cm H₂O.