Table 4.

Association of sociodemographic variables with stress, sleep quality, depression, and self-efficacy based on the bivariate regression analysis.

Socio-demographic variables		Perceived stress scale total score		PROMIS-sleep disturbance scale total score		PROMIS-depression scale total score		Mean self-efficacy total score
Age	Spearman's rho	−0.148	***	−0.187	***	−0.173	***	0.041
	p	<0.001		<0.001		<0.001		0.286
	Kendall's tau B	−0.119	***	−0.151	***	−0.139	***	0.032
	p	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	0.287
Gender	Spearman's rho	0.255	***	0.084	*	0.165	***	−0.151	***
	p	<0.001		0.028		<0.001		<0.001
	Kendall's tau B	0.212	***	0.07	*	0.137	***	−0.125	***
	p	<0.001		0.028		<0.001		<0.001
Marital status	Spearman's rho	−0.148	***	−0.179	***	−0.219	***	−0.006
	p	<0.001		<0.001		<0.001		0.87
	Kendall's tau B	−0.122	***	−0.148	***	−0.181	***	−0.005
	p	<0.001		<0.001		<0.001		0.875
Education	Spearman's rho	−0.124	**	−0.127	***	−0.153	***	0.072
	p	0.001		<0.001		<0.001		0.061
	Kendall's tau B	−0.098	**	−0.1	***	−0.121	***	0.057
	p	0.001		<0.001		<0.001		0.058
Family members	Spearman's rho	−0.01		0.048		0.067		−0.03
	p	0.791		0.211		0.079		0.433
	Kendall's tau B	−0.008		0.038		0.053		−0.024
	p	0.791		0.212		0.079		0.424
Occupation	Spearman's rho	−0.133	***	−0.112	**	−0.112	**	−0.002
	p	<0.001		0.003		0.003		0.969
	Kendall's tau B	−0.104	***	−0.088	**	−0.089	**	−0.001
	p	<0.001		0.003		0.003		0.979
Monthly income	Spearman's rho	−0.065		−0.074		−0.043		0.1	**
	p	0.087		0.054		0.265		0.009
	Kendall's tau B	−0.05		−0.057		−0.032		0.077	**
	p	0.086		0.052		0.273		0.008

^* means p-value < 0.05,

^** means p-value < 0.01,

^***means p-value < 0.001. The bold values refer to statistically significant values.