Table 2. Mean and standard deviation of sleep quality measurements

Variables	Mean ± SD	Range
Bed time	9:14 p.m ± 0.92	8:00 p.m - 11:00 p.m
Number of minutes (to fall asleep)	55.86 minutes ± 19.79	20 - 90 minutes
Getting up time	4:55 a.m ± 0.78	3 a.m - 6 a.m
Hours of sleep per night	4.93 hours ± 1.03	3- 6 hours
Global PSQI score	10.3 ± 3.27	0 - 21