Table 1 Most important results: Performance parameters with regard to the detection of breast cancer. Performance parameters affecting the detection of breast cancer: all parameters correspond to the requirements of the EU Guidelines 1, 24.

Parameter		Reference range EU Guidelines, 4th edition		Results screening Germany 2008–2009
		First examinations	Subsequent examinations	First examinations	Subsequent examinations
4.	Breast cancer detection rate (multiple of the regional background incidence)	≥ 3 × IR	≥ 1.5 × IR	Regionally fluctuating (1.7–4.6)	Regionally fluctuating (1.4–4.0)
5.	Breast cancer detection rate (cases per 1 000)	approx. 7.5/1 000	approx. 3.8/1 000	8.2 ‰	5.6 ‰
6.	Proportion of in-situ carcinomas	10 %> 15 %	10 %> 15 %	19.5 %	19.8 %
7.	Proportion of invasive carcinomas ≤ 10 mm	n. a.≥ 25 %	25 %≥ 30 %	30.0 %	34.9 %
8.	Proportion of invasive carcinomas < 15 mm	≥ 50 %	≥ 50 %	51.3 %	57.2 %
9.	Proportion of carcinomas not involving the lymph nodes (N−)	n. a.> 70 %	≥ 75 %	74.8 %	79.0 %
10.	Proportion of carcinomas in UICC stage II+	n. a.< 30 %	≤ 25 %	28.9 %	24.2 %