Table 1.

Prevalence of breast cancer in women under age 40 in US cancer screening studies

Number of patients	Number of breast cancers	Prevalence per 1,000 women	Sensitivity of Mammography	Mammography detected prevalence (cancers/1,000 women)	Reference
4,402	5	1.1	0.82	0.9	Destouet & Sherman, 1997 33
7,308	22	3.0	0.77	2.3	Kerlikowski et al. 1996 34
43,906	78	1.8	0.68	1.2	Kerlikowski et al. 2000 35
11,128	162	1.5	0.85	1.2	Bobo et al. 2000 36