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. 2019 Aug 30;14(8):e0214776. doi: 10.1371/journal.pone.0214776

Fig 1. The association between sleep duration and risks for multiple health outcomes.

Fig 1

(A and C) The U-shaped association between total sleep duration and risks for multiple health outcomes. (B and D) The positive association between daytime napping duration and risks for multiple health outcomes. The bars in each group of data in the figure represent the total sleep duration of <6, 6–7, 7–8, 8–9 and >9 hours or represent the daytime napping duration of 0, 0–1, 1–1.5 and >1.5 hours, successively. Figs 1C and 1D were adjusted for age, sex, BMI, HC, WC, alcohol consumption and smoking habits, physical exercise, TG, TC, HDL, LDL, GGT, blood glucose (except for diabetes), and blood pressure (except for hypertension).