Table 6.

The association of sleep questionnaires and sleep difficulties with dyslipidemia (DL) using logistic regression models.

			Model 1		Model 2
	DL	p-value	cOR (95% CI)	p-value	aOR (95% CI)	p-value
Sleep questionnaires
ESS		0.466
Normal day sleepiness	287 (32.8)		Ref.		Ref.
Excessive day sleepiness	24 (28.9)		0.83 (0.51-1.37)	0.466	0.72 (0.44-1.20)	0.212
AIS		0.011
Non-insomniac	241 (30.7)		Ref.		Ref.
Insomniac	70 (40.7)		1.59 (1.10-2.8)	0.011	1.43 (1.00-2.03)	0.050
PSQI		<0.001
Good quality	152 (25.8)		Ref.		Ref.
Poor quality	159 (43.2)		2.19 (1.66-2.89)	<0.001	1.31 (0.96-1.81)	0.094
BQ		0.001
Low risk	175 (28.7)		Ref.		Ref.
High risk	136 (39.1)		1.59 (1.21-2.10)	0.001	1.32 (0.95-1.83)	0.097
Sleep difficulties
Delay in falling asleep		0.064
Less than once a week	183 (30.3)		Ref.		Ref.
At least once a week	128 (36.2)		1.30 (0.99-1.72)	0.064	1.18 (0.85-1.63)	0.328
Inability to maintain asleep		<0.001
Less than once a week	51 (14.1)		Ref.		Ref.
At least once a week	260 (43.7)		4.73 (3.38-6.63)	<0.001	2.99 (2.05-4.36)	<0.001
Early morning awakenings		<0.001
Less than once a week	156 (28.0)		Ref.		Ref.
At least once a week	155 (38.8)		1.63 (1.24-2.14)	<0.001	1.38 (1.00-1.89)	0.050

Notes: ESS = Epworth sleepiness scale; AIS = Athens insomnia scale; PSQI = Pittsburgh sleep quality index; BQ = Berlin questionnaire; cOR = Crude odds ratio; aOR = Adjusted odds ratio; CI = Confidence interval; Model 1 = Crude, unadjusted; Model 2 = Adjusted for socio-demographic characteristics, lifestyle habits, and health related characteristics.