Table 2.

Pearson’s Correlations between Percent Change in Weight and Percent Change in Airway Dimensions, Soft Tissue Volumes, and Abdominal Fat Measures among Patients with Obstructive Sleep Apnea

	Unadjusted			Adjusted
	n	Rho*	P Value	n	Rho†	P Value
Airway sizes
RP airway volume	64	−0.05	0.668	63	−0.09	0.502
RP cross-sectional area	64	−0.14	0.285	63	−0.18	0.179
RP minimum area	64	0.01	0.942	63	0.01	0.936
RP minimum AP distance	64	0.30	0.017	63	0.36	0.006
RP minimum lateral distance	64	−0.26	0.035	63	−0.34	0.009
RG airway volume	62	0.08	0.523	61	0.10	0.443
RG cross-sectional area	60	0.16	0.224	59	0.14	0.321
RG minimum area	61	−0.33	0.008	60	−0.43	0.001
RG minimum AP distance	60	0.15	0.253	59	0.12	0.385
RG minimum lateral distance	60	−0.02	0.875	59	−0.05	0.701
Soft tissue volumes
Combined soft tissue	63	0.14	0.268	62	0.18	0.187
Soft palate	64	−0.15	0.234	63	−0.14	0.303
Genioglossus	64	−0.02	0.866	63	−0.01	0.937
Other tongue	64	0.01	0.962	63	0.04	0.788
Tongue fat	52	0.62	<0.0001	51	0.62	<0.0001
Total tongue	64	−0.03	0.833	63	0.00	0.993
Epiglottis	63	0.07	0.591	62	0.09	0.486
Fat pads	63	0.08	0.529	62	0.08	0.536
Pterygoid	64	0.42	0.001	63	0.40	0.002
RP lateral walls	64	0.25	0.044	63	0.31	0.017
RG lateral walls	64	0.19	0.137	63	0.23	0.088
Total lateral walls	64	0.32	0.011	63	0.40	0.002
Abdominal fat volume
Abdominal total fat	51	0.52	0.0001	50	0.54	0.0001
Abdominal subcutaneous fat	51	0.50	0.0002	50	0.52	0.0003
Abdominal visceral fat	51	0.46	0.001	50	0.49	0.001

Definition of abbreviations: AP = anterior–posterior; RG = retroglossal; RP = retropalatal.

Significant values after Hochberg correction are shown in bold.

^*Unadjusted Pearson’s linear correlation.

^†Partial Pearson’s correlation adjusted for age, sex, race, apnea–hypopnea index, and height.