Table 2.

Correlation between CCA parameters and clinical, biochemical, and sleep characteristics.

	Quantitative IMT		CC		DC		α		β		PWV
	r	p	r	p	r	p	r	p	r	P	r	p
Age	0.540	<0.001	−0.545	<0.001	−0.617	<0.001	0.605	<0.001	0.602	<0.001	0.653	<0.001
BMI	0.05	0.632	−0.123	0.233	−0.011	0.915	0.063	0.545	0.061	0.559	0.085	0.413
Males	0.089	0.393	−0.228	0.026	−0.337	0.001	0.179	0.082	0.179	0.083	0.255	0.012
TG	0.243	0.02	−0.162	0.125	−0.218	0.038	0.105	0.323	0.103	0.323	0.193	0.067
TC	0.246	0.017	−0.081	0.054	−0.105	0.313	0.013	0.9	0.012	0.911	0.085	0.416
LDL	0.201	0.052	−0.008	0.941	−0.39	0.707	−0.005	0.960	−0.006	0.952	0.014	0.891
HDL	−0.079	0.448	0.098	0.346	0.138	0.186	−0.105	0.316	−0.104	0.320	−0.161	0.122
AHI	0.239	0.019	−0.273	0.007	−0.295	0.004	0.204	0.048	0.204	0.048	0.299	0.003
Mini SaO2	−0.188	0.068	0.351	0.028	0.348	0.001	−0.321	0.001	−0.321	0.001	−0.410	0.001
CT90	0.296	0.004	−0.351	<0.001	−0.390	<0.001	0.358	<0.001	0.360	<0.001	0.404	<0.001
Chemerin	0.014	0.899	0.128	0.229	−0.044	0.678	−0.029	0.783	−0.030	0.780	−0.017	0.876
Adiponectin	−0.097	0.379	0.277	0.01	0.311	0.004	−0.157	0.151	−0.156	0.155	−0.236	0.03
SFRP5	0.05	0.637	−0.131	0.218	0.138	0.195	0.060	0.575	0.058	0.575	0.094	0.379
Apelin	−0.077	0.478	0.1	0.354	0.168	0.118	0.007	0.947	0.008	0.942	−0.033	0.760

Spearman coefficient for Arousal Index and CT90; Pearson coefficient for other variables.

CCA, common carotid artery; BMI, body mass index; TG, triglyceride; TC, total cholesterol; HDL, high-density lipoprotein, LDL, low-density lipoprotein; AHI, apnea-hypopnea index; Mini SaO₂, minimum arterial oxygen saturation; CT90, percentage of sleep duration with SpO₂ <90%, SFRP5, secreted frizzled-related protein 5; QIMT, quality intima-media thickness; CC, compliance coefficient; DC, distensibility coefficient; PWV, pulse wave velocity.