TABLE 2.

Performance comparison between the single and multimodality methods Note. Reported are the estimation bias and mean squared error (MSE) of the total indirect effect, and the sensitivity and specificity, as well as the standard error (SE) of the measures, of the pathway selection

Scenario	Method	Bias	MSE	Sensitivity (SE)	Specificity (SE)
(a)	Multimodality	0.293	3.538	0.997 (0.035)	0.909 (0.030)
	Single-modality	0.613	2.208	0.995 (0.050)	0.898 (0.044)
(b)	Multimodality	0.069	23.95	0.966 (0.073)	0.935 (0.017)
	Single-modality	0.306	22.91	0.998 (0.023)	0.929 (0.043)
(c-1)	Multimodality	0.420	3.552	0.814 (0.151)	0.952 (0.011)
	Single-modality	2.524	7.874	0.341 (0.302)	0.923 (0.045)
(c-2)	Multimodality	−0.015	14.55	0.814 (0.110)	0.958 (0.012)
	Single-modality	1.219	13.23	0.638 (0.121)	0.982 (0.020)