Table 1. Sleep patterns collected from sleep diaries of the study population

Characteristics	Overall sample mean ± SD	Weekdays mean ± SD	Weekends mean ± SD	p*
Total sleep time (hours)	6.2 ± 1.4	6.1 ± 1.4	6.6 ± 1.3	<0.001
Sleep efficiency (%)	89 ± 9.2	89 ± 8.9	89 ± 10.1	0.397
Bedtime (clock time)	0:01 ± 1:17	23:59 ± 1:17	0:05 ± 1:17	0.248
Falling asleep time (clock time)	0:31 ± 1:17	0:29 ± 1:18	0:35 ± 1:16	0.185
Wake up time (clock time)	6:48 ± 1:26	6:36 ± 1:23	7:18 ± 1:25	<0.001
Get up time (clock time)	7:03 ± 1:28	6:50 ± 1:24	7:37 ± 1:29	<0.001

between weekdays and weekends