Table 4.

Means, standard deviations and significance level for the components of the PSQI

	Scale	Women		Men		Significance level
		Mdn	M (SD)	Mdn	M (SD)
(1)	Sleep quality	1		1		U = 812,926; z = 1.817; p = .069
(2)	Sleep-onset latency In minutes	2	25.48 (28.53)	2	22.52 (21.27)	U = 797,021, z = 1.285; p = .199
(3)	Sleep duration In hours	0	7.10 (1.10)	0	7.02 (1.07)	U = 773,050; z = -.233; p = .816
(4)	Habitual sleep efficiency In percent	0	87.35 (10.32)	0	88.81 (9.65)	U = 792,965; z = 1.190; p = .234
(5)	Sleep disturbance	1		1		U = 880,629; z = 7.144; p = .000*
(6)	Use of sleep medication	0		0		U = 786,964; z = .432; p = .666
(7)	Daytime dysfunction	1		1		U = 812,662; z = 2.510; p = .012*

Mdn median; M mean; SD standard deviation; * p ≤ 0.05