Sleep disturbances are associated with anxiety, depression, and decreased quality of life in patients with coronary heart disease

Figure 1 Comparison of both groups’ self-rating depression scale and self-rating anxiety scale scores. ^aP < 0.05 vs non-sleep disorder group. SDS: Self-rating depression scale; SAS: Self-rating anxiety scale.

Figure 2 Comparison of both groups’ quality of life scores. ^aP < 0.05 vs non-sleep disorder group.

Figure 3 Calibration degree of the logistic regression model.

Figure 4 Prediction efficiency of the logistic regression model. ROC: Receiver operating characteristic.

Figure 5 Correlation between sleep disorders and anxiety and depression. A: Pittsburgh sleep quality index (PSQI) is correlated with physiological field; B: The correlation between PSQI and self-rating depression scale. SAS: Self-rating anxiety scale; SDS: Self-rating depression scale.

Figure 6 Correlation between sleep disorders and quality of life. A: Pittsburgh sleep quality index (PSQI) is correlated with physiological field; B: PSQI is related to psychological field; C: Correlation between PSQI and environmental field; D: Correlation between PSQI and social field.