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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Obesity (Silver Spring). 2013 Mar;21(3):421–423. doi: 10.1002/oby.20351

Figure 1. Endogenous circadian rhythm in hunger.

Figure 1

Cosinor model is shown as mean (black line) ± 95% confidence interval (gray area). In addition, averaged data are shown grouped into six 60°(~4 h) bins (open circles). The model and data points are ‘double-plotted’ to better portray circadian rhythmicity. Bottom X-axis, circadian phase; top X-axis, corresponding clocktime; horizontal gray boxes, average habitual scheduled sleep episode; P-value, statistical significance of a circadian rhythm in hunger.