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

Table 3

Prediction of psychosocial outcomes in participants with OSA treated with CPAP using stepwise regression.

Predictors	BDI	POMS	FOSQ
ESS (post)
β	0.45	0.54	−0.42
Δ𝑅^2	.20	.29	.29
t (df)	2.59 (27)	3.33 (27)	−2.67 (26)
P	.015	.002	0.013
PSQI (post)
β			−.37
Δ𝑅^2			0.13
t (df)			−2.36 (26)
P			.026
Model 𝑅^2	.20	.29	.42
Adjusted 𝑅^2	.17	.27	.37
F (df)	6.71 (1, 27)	11.12 (1, 27)	9.31 (2, 26)
𝑃	.015	.002	.001

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.
ESS: Epworth Sleepiness Scale; PSQI: Pittsburg Sleep Quality Index; BDI: Beck Depression Inventory; POMS: Profile of Mood States; FOSQ: Functional Outcomes of Sleep Questionnaire.