Impacts of the psychological stress response on nonsuicidal self-injury behavior in students during the COVID-19 epidemic in China: the mediating role of sleep disorders

Table 3 The mediation effect size of sleep disorders in the relationship between PSR and NSSI in the T1 sample

Variable	Model 1 (NSSI)		Model 2 (sleep disorders)		Model 3 (NSSI)
	β	t	β	t	β	t
PSR	1.12	20.79***	0.68	15.56***	0.99	17.57***
Sleep disorders					0.19	6.80***
Gender	− 0.05	− 1.11	− 0.10	− 3.10**	− 0.03	− 0.65
Age	0.01	2.67**	0.01	3.08**	0.01	2.22*
Monthly household income	− 0.00	− 0.22	0.01	0.56	− 0.01	− 0.31
Area	− 0.20	− 3.68***	− 0.15	− 3.40***	− 0.17	− 3.18**
Current status	− 0.08	− 1.90	− 0.17	− 4.76***	− 0.05	− 1.18
R	0.46		0.40		0.48
R²	0.22		0.16		0.23
F (df)	89.08*** (6, 1948)		63.17*** (6, 1948)		84.74*** (7, 1947)

PSR psychological stress response; EMA emotional management ability; NSSI nonsuicidal self-injury
^*p < 0.05, **p < 0.01, ***p < 0.001

ISSN: 2050-7283