Table 3.

Determinants of health status in sleep study participants (sleep study group). Coefficients and 95% confidence intervals (95% CI) for SF-36 scales according to categories of obstructive sleep apnea severity. Multivariable linear regression adjusted for gender, education, age, body mass index, Epworth sleepiness scale score > 10 as well as presence of high blood pressure, diabetes and anxiety or depression.

	Physical functioning (N = 304)			Vitality (N = 304)			Physical component summary (N = 304)			Mental component summary (N = 304)
	Coef.*	95% CI	P	Coef.*	95% CI	P	Coef.*	95% CI	P	Coef.*	95% CI	P
Obstructive sleep apnea
Normal (AHI** < 5)	0
Mild (AHI** 5–14)	−0.7	−5.1–3.7	0.76	−0.6	−6.1–4.8	0.82	−0.8	−3.6–2.1	0.60	0.1	−2.5–2.7	0.95
Moderate (AHI** 15–29)	4.1	−1.2–9.4	0.126	3.4	−4.6–11.2	0.41	0.4	−3.5–4.4	0.83	1.4	−2.0–4.8	0.43
Severe (AHI** > 30)	−0.1	−7.1–6.8	0.98	1.9	−8.1–9.0	0.92	−1.1	−5.1–2.9	0.59	1.4	−1.7–4.5	0.36
Female gender	−3.6	−8.3–1.0	0.128	−2.0	−7.3–3.2	0.45	−0.9	−3.8–1.9	0.53	−1.9	−4.5–0.67	0.147
Education
Schooling up to 10 years	0
Schooling 11–13 years	2.2	−3.7–8.1	0.47	1.9	−5.5–9.3	0.61	0.6	−3.0–4.2	0.74	0.3	−2.7–3.3	0.84
University or college degree	3.2	−2.8–9.2	0.29	1.9	−5.4–9.1	0.62	0.1	−3.3–3.5	0.94	−1.0	−3.8–1.8	0.48
Age per 10 years	−1.1	−3.0–0.7	0.24	4.4	2.1–6.6	<0.001	−0.3	−1.3–0.8	0.64	1.85	0.8–2.9	<0.001
Body mass index, kg/m2	−0.8	−1.3–−0.3	0.001	0.4	−0.1–1.0	0.122	−0.1	−0.4–0.1	0.31	0.2	−0.06–0.4	0.143
Epworth Sleepiness Scale > 10	−1.0	−5.0–3.0	0.63	−9.7	−14.3–−5.1	<0.001	−1.2	−3.7–1.3	0.34	−1.2	−3.1–0.8	0.25
High blood pressure	−5.2	−11.4–1.0	0.101	−2.0	−9.1–5.2	0.59	−3.8	−6.8–−0.7	0.016	0.3	−2.4–3.1	0.81
Diabetes mellitus	−9.9	−19.6–−0.3	0.043	−7.8	−16.9–1.4	0.098	−3.8	−8.9–1.2	0.135	−1.6	−5.6–2.5	0.45
Anxiety or depression	−4.1	−9.9–1.7	0.163	−12.1	−18.3–−5.8	<0.001	−1.3	−4.2–1.6	0.38	−12.7	−15.7–−9.6	<0.001

^*Unstandardized beta coefficient.

^**Apnea-hypopnea index.