Table 2.

Descriptive statistics of sleep quality (PSQI) in patients with bipolar disorder.

Components (PSQI)	Mean	S.D
Sleep quality	1.37	0.95
Sleep latency	1.83	1.01
Sleep duration	1.32	1.06
Habitual sleep efficiency	1.42	1.02
Sleep disturbances	1.35	0.63
Use of sleeping medications	2.31	1.05
Daytime dysfunction	1.01	0.83
Overall sleep quality	11.17	4.69