Table 3 Mediating role of health risk behaviors in the association of health locus of control with anxiety and depression.

Variable	Effect	Dependent Variable						Mediated proportion, %
		Health risk behaviors			Anxiety
		ß	95%CI	P	ß	95%CI	P
Internality	Direct effect	-0.05	-0.09, -0.001	0.05	-0.05	-0.10, 0.003	0.06	7.6
	Indirect effect	-	-	-	-0.004	-0.01, -0.001	0.03
	Total effect	-0.05	-0.09, -0.001	0.05	-0.05	-0.10, -0.002	0.05
Powerful others externality	Direct effect	-0.08	-0.16, -0.01	< 0.001	-0.33	-0.41, -0.25	< 0.001	2.4
	Indirect effect	-	-	-	-0.01	-0.02, -0.002	0.02
	Total effect	-0.08	-0.16, -0.01	< 0.001	-0.34	-0.42, -0.26	< 0.001
Chance externality	Direct effect	0.12	0.06, 0.18	< 0.001	0.49	0.43, 0.56	< 0.001	2.2
	Indirect effect	-	-	-	0.01	0.01, 0.02	< 0.001
	Total effect	0.12	0.06, 0.18	< 0.001	0.50	0.44, 0.57	< 0.001
Health risk behaviors	Direct effect	-	-	-	0.09	0.06, 0.13	< 0.001	-
	Indirect effect	-	-	-	-	-	-
	Total effect	-	-	-	0.09	0.06, 0.13	< 0.001
		Health risk behaviors			Depression
Internality	Direct effect	-0.04	-0.08, 0.003	0.07	-0.05	-0.10, -0.001	0.05	-
	Indirect effect	-	-	-	-0.004	-0.01, 0.001	0.07
	Total effect	-0.04	-0.08, 0.003	0.07	-0.05	-0.10, -0.004	0.03
Powerful others externality	Direct effect	-0.11	-0.19, -0.02	0.01	-0.46	-0.55, -0.37	< 0.001	10.5
	Indirect effect	-	-	-	-0.01	-0.02, -0.003	< 0.001
	Total effect	-0.11	-0.19, -0.02	0.01	-0.47	-0.11, -0.38	< 0.001
Chance externality	Direct effect	0.14	0.07, 0.21	< 0.001	0.64	0.56, 0.73	< 0.001	2.1
	Indirect effect	-	-	-	0.01	0.01, 0.02	< 0.001
	Total effect	0.14	0.07, 0.21	< 0.001	0.66	0.57, 0.75	< 0.001
Health risk behaviors	Direct effect	-	-	-	0.10	0.07, 0.14	< 0.001	-
	Indirect effect	-	-	-	-	-	-
	Total effect	-	-	-	0.10	0.07, 0.14	< 0.001

Adjusted for gender, major, only child in the family (yes, no), father’s education level, mother’s education level, self-rated family economic conditions, average monthly consumption (RMB), study score, study burden.

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