Fig. 4
From: Automatic sleep stage classification based on subcutaneous EEG in patients with epilepsy
Comparison of ground truth sleep measures to estimated sleep measures. The blue squares indicate results from the PS algorithm, the red circles are the LONO algorithm and the yellow diamonds are the human expert. Left: scatter plot with Deming regression line, slope of regression line (\(\beta\)) and Pearson’s correlation coefficient (r). Right: Bland–Altman plots. The solid line is the mean difference, and the dotted lines are 1.96 times the standard deviation of the mean