Table 2.

Unadjusted and adjusted correlations of ultrasound and MRI with AHI severity among cohort with non-missing MRI measures

Characteristic	N	Unadjusted		Adjusted*
		rho	P	rho	P
Ultrasound measures
Echo intensity	74	0.34	.003	0.27	.024
Tongue height, mm	70	0.17	.166	0.10	.420
Tongue width, mm	70	0.31	.009	0.18	.145
MRI measures
Posterior tongue fat, %	74	0.35	.002	0.28	.020
Whole tongue fat, %	74	0.42	.0002	0.38	.001
Tongue height, mm	70	0.21	.087	0.15	.243
Tongue width, mm	70	0.32	.008	0.19	.119

*Partial correlation adjusted for age, BMI, sex and race (white vs. non-white).