Table 4.

Multiple Comparisons of Prediction of pCR by US, MRI, and US+MRI (Significance Threshold, P<0.017)

Groups	Sensitivity		Specificity		Accuracy		PPV		NPV
	χ2	P	χ2	P	χ2	P	χ2	P	χ2	P
1 vs 2	2.1	0.148	3.2	0.074	5.8	0.016	5.9	0.015	2.2	0.141
1 vs 3	12.3	<0.001	34.9	<0.001	0.1	0.793	12.5	<0.001	2.1	0.147
2 vs 3	23.1	<0.001	19.0	<0.001	6.5	0.011	3.3	0.068	8.1	0.004

Notes: 1, US; 2, MRI; 3, US+MRI.