Regression analyses
Regression analyses indicated that objective (EASI) and subjective (POEM) severity of AD similarly predicted sleep quality (PSQI: R²=0.26, F1,54=18.64, p<0.001; R²=0.24, F1,55=16.92, p<0.001, respectively) (Figures 3A–B). As shown in Figure 3C–D, the subjective AD severity largely predicted insomnia symptoms (R²=0.31, F1,55=24.27, p<0.001) than the objective measure (ISI: R²=0.19, F1,54=12.26, p<0.001). Therefore, more severe AD was associated with worse sleep quality and more insomnia symptoms.