Table 4.

Regression analysis of the chain mediating model.

variable	Outcome: SC			Outcome: RA			Outcome: PD			Outcome: MPA
										Total			mediator: SC-RA			mediator: SC-PD
	B	SE	p	B	SE	p	B	SE	p	B	SE	p	B	SE	p	B	SE	p
1 Gender	−0.13***	0.05	p < 0.001	−0.05*	0.05	p < 0.05	−0.11***	0.04	p < 0.001	0.15***	0.05	p < 0.001	0.11***	0.04	p < 0.001	0.12***	0.04	p < 0.001
2 Major	0.02	0.02	0.38	0.01	0.02	0.81	0.05*	0.02	p < 0.05	0.03	0.02	0.33	0.04	0.02	0.14	0.02	0.02	0.31
3 Grade	−0.07**	0.04	p < 0.01	0.01	0.03	0.72	−0.01	0.03	0.78	0.072**	0.04	p < 0.01	0.04*	0.03	p < 0.05	0.04*	0.03	p < 0.05
4 PE	0.09***	0.03	p < 0.001	−0.03	0.03	0.19	−0.04	0.02	0.1	−0.11***	0.03	p < 0.001	−0.06*	0.02	p < 0.05	−0.06*	0.02	p < 0.05
5 SC				−0.41***	0.02	p < 0.001	−0.46***	0.02	p < 0.001				−0.34***	0.02	p < 0.001	−0.32***	0.02	p < 0.001
6 RA													0.22***	0.02	p < 0.001	-	-	-
7 PD																0.23***	0.02	p < 0.001
R 2		0.043			0.168			0.21			0.047			0.26			0.26
F		20.57***			73.93***			98.4***			22.77***			108.57***			109.39***
Results of bootstrapping mediation effect examination
Mediating effects					indirect		95%CI						Proportion			Degree of mediation
PE → SC → RA → MPA (H4)					−0.008**		[−0.014, −0.003]						17.40%			partial mediation
PE → SC → PD → MPA (H5)					−0.01**		[−0.017, −0.004]						19.76%			partial mediation

N = 1,843. M, meditation; PE, physical exercise; MPA, mobile phone addiction; SC, self-control; RA, Rumination; PD, psychological distress. Unstandardized regression coefficients are reported. Bootstrap sample size = 5,000.

^***p < 0.001;

^**p < 0.01;

^*p < 0.05.