Table 6.

Bootstrap indirect effects analysis of nonparametric ratios.

Mediating effect path	Indirect effect	Standard error	95% CI
			BootLLCI	BootULCL
Doctors’ empathy abilities → NK activity	0.0708	0.444	−0.0167	0.1583
Gross effect	0.3284	0.416	0.2461	0.4120
Empathy → stigma → NK activity	0.1915	0.0496	0.1037	0.2967
Empathy → self-efficacy → NK activity	0.1369	0.0413	0.0575	0.2183