The Clinical Application of Combined Ultrasound, Mammography, and Tumor Markers in Screening Breast Cancer among High-Risk Women

Table 2

Comparison of positive detection rates of BC in high-risk groups of all age.

Group	Pathology
	Positive ()	Negative ()
30-39 years ()	3	1969	4.889	0.027
40-49 years ()	24	4428	3.868	0.049
50-70 years ()	12	4385	0.845	0.358
	7.277
	0.026