Table 3. Relationship between insomnia and sleep patterns, sleep quality

Characteristics	Insomnia mean ± SD or n (%)		p
	Yes	No
Total sleep time (hours)	6.2 ± 1.4	6.3 ± 1.4	0.155
Sleep efficiency (%)	86 ± 10.2	93 ± 6.2	<0.001
Bedtime (clock time)	23:54 ± 1:15	24:08 ± 1:19	0.001
Falling asleep time (clock time)	00:37 ± 1:16	00:23 ± 1:18	0.002
Wake up time (clock time)	6:52 ± 1:30	6:44 ± 1:20	0.12
Get up time (clock time)	7:10 ± 1:32	6:56 ± 1:22	0.007

Sleep quality
Very poor	6 (60.0)	4 (40.0)	0.01
Poor	102 (64.2)	57 (35.8)
Good	440 (50.2)	437 (49.8)
Very good	103 (55.4)	83 (14.3)