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

Table 3 Single factor analysis of sleep disorders in patients with coronary heart disease

Factor	Sleep disorder group, n = 112	Non-sleep disorder group, n = 128	χ2/t value	P value
Sex
Male	47 (41.69)a	79 (61.27)	9.347	0.002
Female	65 (58.04)a	49 (38.28)
Age in yr	62.56 ± 7.18a	60.72 ± 6.61	2.070	0.040
≥ 60	56 (50.00)	30 (23.44)
< 60	56 (50.00)	98 (76.56)
Disease type
Stable angina pectoris	57 (50.89)	67 (52.34)	0.050	0.822
Acute coronary syndrome	55 (49.11)	61 (47.66)
Smoking
Yes	44 (39.29)	46 (35.94)	0.286	0.593
No	68 (60.71)	82 (64.06)
Marital status
Single	6 (5.36)	9 (7.03)	0.286	0.593
Married	106 (94.64)	119 (92.97)
Hypertension
Yes	68 (60.71)	74 (57.81)	0.208	0.648
No	44 (47.89)	54 (42.19)
Diabetes
Yes	31 (27.68)	29 (22.66)	0.804	0.370
No	81 (72.32)	99 (77.34)
Family history of CHD
Yes	25 (22.32)	22 (17.19)	1.000	0.317
No	87 (77.68)	106 (82.81)
History of dyslipidemia
Yes	32 (28.57)	39 (30.47)	0.103	0.748
No	80 (71.43)	89 (69.53)
Education level
High school and below	54 (48.21)	62 (48.44)	0.001	0.972
College or above	58 (51.79)	66 (51.56)
Working status
On-the-job	26 (23.21)	42 (32.81)	3.023	0.221
Waiting for employment	6 (5.36)	8 (6.25)
Retired	80 (71.43)	78 (60.94)
Medical insurance type
Medical insurance for urban workers	45 (40.18)a	85 (66.41)	16.551	< 0.001
New rural cooperative medical insurance	67 (59.82)a	43 (33.59)
Anxiety, ≥ 50 points
Yes	65 (58.04)a	14 (10.94)	60.006	< 0.001
No	47 (41.96)a	114 (89.06)
Depression, ≥ 53 points
Yes	41 (36.16)a	7 (5.47)	36.1987	< 0.001
No	71 (63.39)a	121 (94.53)

^aP < 0.05 vs non-sleep disorder group.

Data are mean ± SD or n (%). CHD: Coronary heart disease.