Table 4.

Multiple logistic regression analysis for the SWE false positive results.

Factor	Group	B	SE	Wald chi-square value	P	OR	95% CI
Nodule size		1.190	0.376	9.995	0.002	3.286	1.572~6.871
Edge	Smooth*
	Irregular	1.298	0.726	3.198	0.074	3.661	0.883~15.179
Calcification	Without calcification*
	Coarse calcification	1.668	0.804	4.310	0.038	5.303	1.098~25.619
	Microcalcification	1.143	0.763	2.244	0.134	3.137	0.703~14.000

*The control group.