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. 2018 Jun 15;18(6):1951. doi: 10.3390/s18061951

Figure 4.

Figure 4

(a) Sensor profiles for bed and chair sensors. The shaded area represents the 95% confidence interval of the estimated sensor profile values; and (b) a comparison of bed SP for two consecutive periods (20 days each). Non-overlapping confidence intervals indicate statistically significant differences, indicating underlying behavioral changes. In this case, bed presence is significantly increased right after lunch (time in UTC).