Table 3. Pittsburgh Sleep Quality Index (PSQI) global and component means and standard deviations.

Variables	Female Mean (SD)	Males Mean (SD)	P
Global score of PSQI	5.82 (0.9)	6.64 (1.1)	0.003
Subjective sleep quality	1.27 (0.4)	1.49 (0.5)	0.02
Sleep latency	0.9 (0.3)	0.9 (0.5)	0.09
Sleep duration	1.34 (0.5)	1.51 (0.4)	0.009
Habitual sleep efficiency	0.31 (0.08)	0.36 (0.1)	0.005
Sleep disturbance	0.85 (0.2)	1.22 (0.4)	0.001
Use of sleep medications	0.24 (0.07)	0.14 (0.09)	0.07
Daytime dysfunction	0.91 (0.3)	1.02 (0.5)	0.21