. Author manuscript; available in PMC: 2012 Feb 1.

Published in final edited form as: Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011 Feb;111(2):239–243. doi: 10.1016/j.tripleo.2010.10.013

Table 2.

Pearson’s linear correlations and p-value for Pearson’s test.

Our variables	AHI (events/hour)	Airway volume (mm³)	Mandible volume (mm³)	Tongue volume (mm³)	T/M ratio (%)
BMI (kg/m²)	0.197 ^‡ (p=.222)	−0.363 ^‡ (p=.021) ^*	0.060 ^‡ (p=.712)	0.441 ^‡ (p=.004) ^*	0.246 ^‡ (p=.126)
AHI (events/hour)		−0.063 (p=.698)	0.048 (p=.768)	0.243 (p=.131)	0.115 (p=.478)
Airway volume (mm³)			0.291 (p=.069)	−0.149 (p=.358)	−0.318 (p=.046) ^*
Mandible volume (mm³)				0.096 (p=.556)	−0.677 (p<.0001) ^***
Tongue volume (mm³)					0.661 (p<.0001) ^***

AHI, Apnea Hypoapnea Index; BMI, body mass index; T/M, tongue/mouth.

^‡

Spearman’s correlation coefficient and p-value of Spearman’s test for non-parametric variables

p<.05,

^**

p<.001,

^***

p<.0001