TABLE 2.

The association of sleep duration and daytime napping with stroke.

	Total stroke, adjusted OR (95%CI)
Variable	Univariate model	Age and gender adjusted	Multivariable adjusted†	Multivariable adjusted‡
Nighttime sleep duration, hours/night
≤ 6 h	1.24 (0.99, 1.55)	1.17 (0.93, 1.46)	1.16 (0.91, 1.49)	0.95 (0.69, 1.31)
6 to ≤ 8 h	1.000	1.000	1.000	1.000
>8 h	1.37 (0.96, 1.96)	1.23 (0.85, 1.76)	1.07 (0.71, 1.62)	0.65 (0.35, 1.21)
Daytime napping, minutes
0	0.88 (0.70, 1.12)	0.94 (0.74, 1.19)	0.82 (0.63, 1.07)	0.73 (0.51, 1.04)
1 to ≤60 min	1.000	1.000	1.000	1.000
>60 min	1.17 (0.87, 1.55)	1.09 (0.82, 1.46)	1.03 (0.74, 1.42)	1.10 (0.73, 1.65)
Total sleep duration, hours/day
<7 h	1.43 (1.14, 1.80) **	1.39 (1.11, 1.75)**	1.34 (1.04, 1.72) *	1.08 (0.77, 1.51)
7 to ≤9 h	1.000	1.000	1.000	1.000
>9 h	1.62 (1.20, 2.21) **	1.46 (1.07, 1.99) *	1.27 (0.89, 1.81)	1.09 (0.68, 1.75)

OR, odds ratio; CI, confidence interval.

*P < 0.05; **P < 0.01.

^†Adjusted for age, gender, educational level, marital status, area of residence, and behaviors including smoking, drinking, and physical activity.

^‡Adjusted for age, gender, educational level, marital status, area of residence, behaviors including smoking, drinking, and physical activity, along with additional adjustment for self-reported diagnosis of stroke, dyslipidemia, hypertension, diabetes or high blood sugar, BMI, waist circumference, triglycerides, HDL-C, systolic and diastolic blood pressure, fasting plasma glucose and HbA1c levels.

Bold values indicate the positive results of the study.