Supplementary Material for: Implementation of the German Mammography Screening Program (German MSP) and First Results for Initial Examinations, 2005-2009

2016-06-24T06:13:54Z (GMT) by Malek D. Kääb-Sanyal V.
Background: The German Mammography Screening
Program (German MSP) is population-based and intended
for women aged 50–69 years (approximately 10.5
million). The program started in 2005 and was implemented
within 5 years. This article describes the implementation,
structure, and screening process, and presents
the results of initial examinations for the prevalence
phase. Methods: Data were collected annually
from invitation centers (invitation, attendance), screening
units (performance, outcomes), and cancer registries
(incidence). Results: In 2009, 92% of all annually eligible
women were invited; 50% of the annually eligible population
participated. The total cancer detection rate in the
period of 2005–2009 was 8.1/1,000; the corresponding recall
rate was 5.9%. 19.6% of detected cancers were ductal
carcinoma in situ; 76.7% of invasive cancers were ≤ 20
mm in size, 30.2% were ≤ 10 mm, and 75.3% were nodenegative.
During the implementation period, incidence
increased by 37 and 56% in the old and new federal
states, respectively. Incidence rates decreased following
the prevalence phase. Conclusion: The German MSP
was successfully implemented. The results of the prevalence
phase meet the target values of the European
guidelines. Proper functioning of the program is also
verified by its effects on breast cancer incidence. To
draw reliable conclusions regarding the long-term effects
of the program, results from the routine screening
rounds have to be awaited.