The Role of Daytime Sleepiness in Psychosocial Outcomes after Treatment for Obstructive Sleep Apnea

Table 4

Prediction of Profile of Mood States subscales in participants with OSA treated with CPAP using stepwise regression.

Predictors	Tension anxiety	Depression dejection	Anger hostility	Vigor activity	Fatigue inertia	Confusion bewilderment
BMI
β					0.38
Δ𝑅^2					.14
t (df)					3.06 (26)
P					.005
ESS (post)
β	0.48	0.39	0.46		0.47	0.47
Δ𝑅^2	.23	.16	.21		.27	0.22
t (df)	2.83 (27)	2.23 (27)	2.70 (27)		3.06 (26)	2.78 (27)
P	.009	.035	.012		.005	.010
PSQI (post)
β				−0.58
Δ𝑅^2				.33
t (df)				−3.66 (27)
P				.001
Model 𝑅^2	.23	.15	.22	.33	.41	.22
Adjusted 𝑅^2	.20	.12	.18	.31	.37	.19
F (df)	7.99 (1, 27)	4.95 (1, 27)	7.28 (1, 27)	13.39 (1, 27)	9.14 (2, 26)	7.70 (1,27)
P	.009	.035	.012	.001	.001	.010

Nonsignificant predictor variables including age, education, diagnostic respiratory disturbance index (RDI), diagnostic peripheral oxygen saturation (SpO₂), and post-treatment sleep efficiency are not shown in the table.
BMI: body mass index; ESS: Epworth sleepiness scale; PSQI: Pittsburg sleep quality index.