. Author manuscript; available in PMC: 2016 Jan 1.

Published in final edited form as: Int J Obes (Lond). 2015 May 18;39(7):1086–1093. doi: 10.1038/ijo.2015.67

Table 3.

Correlation coefficients between obstructive sleep apnea syndrome measures and primary imaging cardiovascular risk markers

	AHI^†	Arousal Index^†	SpO₂ nadir^†	Mean SpO₂	Peak sleep E_TCO₂	Mean sleep E_TCO₂
cIMTmax	0.02 (0.91)	0.03 (0.89)	−0.27 (0.17)	0.24 (0.23)	0.14 (0.50)	0.12 (0.55)
CCA diameter	0.07 (0.70)	−0.01 (0.95)	0.04 (0.83)	−0.18 (0.32)	0.28 (0.13)	−0.625 (<0.0005)
CFPWV^†	0.16 (0.40)	0.29 (0.12)	−0.02 (0.93)	−0.17 (0.38)	−0.13 (0.48)	−0.19 (0.31)
AIx (AP/PP)	0.01 (0.96)	−0.03 (0.88)	0.24 (0.20)	0.24 (0.10)	0.11 (0.55)	0.01 (0.95)

Numbers represent Pearson correlation coefficients unless otherwise noted.

^†

Spearman correlation analysis. Numbers in bold indicate significant association.

Legend: CFPWV= carotid-femoral pulse-wave velocity; CCA=common carotid artery; cIMTmax = mean maximal carotid intima-media thickness; AIx=augmentation index (AP/PP); SpO2=oxyhemoglobin saturation.