Fig. 3: Correlations between wearable-derived CARE, relative amplitude, and relative energy of behavioral noise with melatonin amplitude.
From: CARE as a wearable derived feature linking circadian amplitude to human cognitive functions

CARE circadian activity rhythm energy. Scatter plots between CARE, relative amplitude, and relative energy of behavioral noise with melatonin amplitude in the melatonin study are shown in the bottom-left corner, and the correlation coefficients between these variables are shown in the upper-right corner. The black lines indicate the linear regression fits, and the shaded areas represent the confidence intervals of the fitted mean values. The correlation coefficients annotated with an asterisk (*) indicate that the correlation is significant at P < 0.05 level, while two asterisks (**) indicate that the correlation is significant at P < 0.01 level.