| Association with sleep quality (OR with 95% CI) | |||
---|---|---|---|---|
Variable | Beijing-Male | Shanghai-Male | Beijing-Female | Shanghai-Female |
Residential location (rural vs. urban) | 1.50 (0.92–2.45) | 3.90 (2.06–7.39)* | 0.68 (0.41–1.14) | 0.86 (0.51–1.45) |
Body Mass Index (BMI) | Â | Â | Â | Â |
   normal vs. over weight | 1.03 (0.73–1.47) | 0.77 (0.53–1.11) | 0.98 (0.73–1.32) | 0.79 (0.60–1.05) |
   under weight vs. over weight | 0.21 (0.08–0.57)* | 1.27 (0.47–3.48) | 0.42 (0.14–1.28) | 0.91 (0.46–1.79) |
Smoking | Â | Â | Â | Â |
   current vs. never smoker | 0.81 (0.52–1.27) | 0.96 (0.62–1.48) | 0.75 (0.47–1.22) | 0.80 (0.24–2.66) |
   former vs. never smoker | 1.16 (0.69–1.95) | 0.63 (0.36–1.08) | 1.06 (0.52–2.18) | 0.17 (0.01–2.75) |
Alcohol drinking (no vs. yes) | 0.84 (0.59–1.19) | 0.86 (0.58–1.26) | 1.20 (0.81–1.77) | 0.88 (0.44–1.75) |
Physical activity | Â | Â | Â | Â |
   high vs. low | 0.99 (0.50–1.98) | 2.09 (1.02–4.30)* | 0.77 (0.46–1.30) | 0.98 (0.55–1.75) |
   moderate vs. low | 0.70 (0.34–1.42) | 1.57 (0.75–3.31) | 0.77 (0.45–1.32) | 0.83 (0.45–1.50) |
Educational level, years in school ‡ |  |  |  |  |
   group 1 vs. 3 | 1.70 (0.98–2.96) | 0.74 (0.37–1.50) | 1.26 (0.79–1.99) | 0.91 (0.54–1.52) |
   group 2 vs. 3 | 1.05 (0.68–1.62) | 0.82 (0.50–1.35) | 1.18 (0.78–1.81) | 0.82 (0.55–1.22) |
Marital status (no spouse vs. spouse) | 1.12 (0.64–1.96) | 4.87 (2.12–11.19)* | 1.30 (0.89–1.89) | 1.08 (0.72–1.62) |
Medical insurance (no vs. yes) | 0.67 (0.42–1.09) | 0.75 (0.44–1.28) | 1.06 (0.66–1.71) | 0.75 (0.48–1.16) |
Employment | Â | Â | Â | Â |
   employed vs. retired | 0.82 (0.55–1.23) | 1.10 (0.71–1.70) | 1.34 (0.86–2.11) | 0.93 (0.62–1.41) |
   unemployed vs. retired | 0.77 (0.46–1.27) | 1.29 (0.75–2.19) | 0.96 (0.64–1.44) | 1.68 (1.05–2.68)* |
Social activity (no vs. yes) | 0.86 (0.60–1.22) | 0.64 (0.44–0.93)* | 0.82 (0.61–1.10) | 0.99 (0.74–1.33) |
Self rated health status (good vs. not good) | 2.18 (1.51–3.16)* | 3.11 (2.00–4.83)* | 2.36 (1.68–3.31)* | 2.43 (1.75–3.39)* |
Diabetes (no vs. yes) | 1.05 (0.68–1.61) | 0.78 (0.45–1.34) | 1.15 (0.80–1.65) | 1.11 (0.66–1.86) |
CVD (no vs. yes) | 1.78 (1.12–2.83)* | 1.58 (0.85–2.96) | 0.82 (0.53–1.25) | 2.72 (1.47–5.04)* |
Arthritis (no vs. yes) | 1.74 (0.96–3.15) | 0.56 (0.29–1.09) | 1.35 (0.94–1.94) | 1.31 (0.89–1.93) |
Prostatism (no vs. yes) | 1.17 (0.69–1.99) | 1.72 (1.00–2.97)* |  |  |
Depressive Symptoms (no vs. yes) | 3.13 (1.82–5.38)* | 9.06 (3.50–23.49)* | 4.34 (2.95–6.36)* | 3.44 (1.77–6.66)* |
Total hours of sleep/day | * | * | * | * |
   <7 vs. 9< hrs | 0.12 (0.06–0.23)* | 0.11 (0.04–0.29)* | 0.08 (0.04–0.14)* | 0.08 (0.04–0.16)* |
   7–9 vs. 9< hrs | 0.66 (0.37–1.16) | 0.61 (0.23–1.62) | 0.64 (0.39–1.06) | 0.45 (0.22–0.90)* |