Figure 3.

(A) PSG WASO vs. actigraphy WASO scatterplot and their corresponding histograms. The dashed black line is the 45-degree line. The solid gray line is the line of best fit and the gray dashed lines are the confidence band of the line of best fit. (B) Bland-Altman plot of individual differences between actigraphy and PSG for WASO. The solid black horizontal line at zero denotes the scenario when no bias is present. The dashed gray line represents the best line of agreement based on the linear spline regression model describing mean change in bias over average WASO and the solid gray lines are the 95% limits of agreement. The dotted black line represents the overall mean bias.