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

Table 6 Correlation between sleep disorders and quality of life, depression, and anxiety

Group	r value	P value
SAS	0.500	< 0.001
SDS	0.493	< 0.001
Physiological field	-0.215	< 0.001
Psychological field	-0.434	< 0.001
Environmental field	-0.080	0.217
Social relations	-0.198	0.002

SAS: Self-rating anxiety scale; SDS: Self-rating depression scale.