Sleep Quality and Emotional State of Medical Students in Dubai

Table 2

Overall sleep quality based on age and sleep time-related variables.

	Rate of overall sleep quality
	Very bad		Fairly bad		Fairly good		Very good		values
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Age (years)	20.0	3.5	19.5	3.2	20.7	3.5	22.7	4.5	0.156
Time to fall asleep (minutes)	21.8	25.8	31.1	44.0	19.0	17.2	15.2	13.3	0.403
Time to go to bed at night (o’clock)	5.0	5.4	7.3	7.3	9.7	8.3	12.5	9.5	0.073
Time to wake up in the morning (o’clock)	6.9	1.3	7.1	1.3	7.3	2.5	9.3	3.5	0.047
Total duration of sleep (hours)	4.2	1.4	5.2	1.2	6.2	1.4	7.5	1.0	<0.001

SD: standard deviation.