| Â | Crude | Model 1 | Model 2 |
|---|
Group of sleep duration* | OR | 95%CI | P value | OR | 95%CI | P value | OR | 95%CI | P value |
Short sleep | 0.82 | 0.50–1.35 | 0.427 | 0.79 | 0.48–1.32 | 0.376 | 0.81 | 0.49–1.35 | 0.423 |
Moderate sleep | Ref. | Â | Â | Ref. | Â | Â | Ref. | Â | Â |
Long sleep | 1.58 | 1.22–2.06 | 0.001 | 1.41 | 1.07–1.87 | 0.016 | 1.41 | 1.05–1.87 | 0.020 |
- *Sleep duration is calculated over 24 h. Short sleep was defined as sleep duration ≤ 6 h, moderate sleep was defined as sleep duration of 7–8 h, and long sleep was defined as sleep duration > 8 h
- ORs and 95% CIs were estimated using the generalized estimating equations
- Model 1: adjusted for sex, age (60–69 y/70–79 y/≥80 y), BMI (kg/m²), MMSE (score), CES-D (score), education (0–7 y/8–15 y/≥16 y), smoking status (current/not), employment status (yes/no), use of hypnotics, sedatives, or anxiolytics (yes/no), physical activity (MET-min/d) at baseline, and follow-up period (y)
- Model 2: adjusted for history of stroke, hypertension, ischemic heart disease, dyslipidemia, and diabetes mellitus, in addition to the variables in Model 1
- OR, odds ratio; CI, confidence interval; Ref., reference; BMI, body mass index; MMSE, Mini-Mental State Examination; CES-D, Center for Epidemiologic Studies Depression Scale; MET, metabolic equivalents
