TABLE 3.

Bootstrap results of the serial mediation models.

Path	Effect	SE	t	P	95% CI
					Lower	Upper
Total effect (c)	–0.457	0.114	–3.998	< 0.001***	–0.682	–0.232
Direct effect	–0.302	0.122	–2.467	0.014*	–0.542	–0.061
Total indirect effect	–0.156	0.052	−	−	–0.265	–0.063
Model a
Indirect effect (X → self-efficacy → Y)	–0.006	0.020	−	−	–0.050	0.032
Indirect effect (X → coping style → Y)	–0.136	0.049	−	−	–0.236	–0.046
Indirect effect (X → self-efficacy → coping style → Y)	–0.015	0.009	−	−	–0.037	–0.001
Model b
Indirect effect (X → coping style → Y)	–0.150	0.054	−	−	–0.263	–0.053
Indirect effect (X → self-efficacy → Y)	–0.002	0.011	−	−	–0.027	0.017
Indirect effect (X → coping style → self-efficacy → Y)	–0.004	0.012	−	−	–0.029	0.021

X, psychological flexibility; Y, pediatric vaccine hesitancy; *P < 0.05, ***P < 0.001.