Table 3. Comparison of proportion of correct diagnosis among three modalities based on multivariate logistic regression analysis.

Categories		Comparison			Odds ratio (OR)	95 % CI		P value
All diagnoses	Modality	Combination	vs	CE-EUS	1.50	0.90	2.50	0.1247
		Combination	vs	EUS-E	1.32	0.79	2.22	0.2933
	Reviewer	B	vs	A	0.81	0.48	1.36	0.4164
		C	vs	A	0.63	0.38	1.05	0.0736
Group 1	Modality	Combination	vs	CE-EUS	1.28	0.69	2.37	0.4402
		Combination	vs	EUS-E	1.24	0.67	2.31	0.4987
	Reviewer	B	vs	A	0.63	0.34	1.19	0.1539
		C	vs	A	0.63	0.34	1.19	0.1543
Group 2	Modality	Combination	vs	CE-EUS	1.99	0.52	7.63	0.3171
		Combination	vs	EUS-E	1.99	0.52	7.63	0.3171
	Reviewer	B	vs	A	1.13	0.31	4.16	0.8552
		C	vs	A	1.13	0.31	4.16	0.8552
Group 3	Modality	Combination	vs	CE-EUS	3.04	0.68	13.64	0.1461
		Combination	vs	EUS-E	0.86	0.19	3.89	0.8458
	Reviewer	B	vs	A	1.93	0.42	8.81	0.3942
		C	vs	A	0.23	0.05	0.98	0.0476