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

Table 2 Comparison of the quality of life scores of patients with coronary heart disease with and without sleep disorders

Group	Physiological field	Psychological field	Environmental field	Social relation
Sleep disorder group, n = 112	35.58 ± 5.75a	30.52 ± 4.72a	45.98 ± 5.40	42.93 ± 5.45a
Non-sleep disorder group, n = 128	38.88 ± 5.52	34.92 ± 3.82	46.63 ± 5.74	45.06 ± 4.30
t value	4.524	7.869	0.901	3.334
P value	< 0.001	< 0.001	0.369	0.001

^aP < 0.05 vs non-sleep disorder group.

Data (points) are mean ± SD.