Do nonattenders in mammography screening programmes seek mammography elsewhere?

Area of Science:

• Public Health
• Radiology
• Epidemiology

Background:

• Understanding diagnostic mammography use in relation to organized screening programs is crucial for public health.
• Previous studies have not fully clarified the behavior of non-attenders or the impact of opportunistic screening policies.

Purpose of the Study:

• To analyze diagnostic mammography use among attendees and non-attenders in Denmark's organized screening programs in 2000.
• To assess 'contamination' of organized screening by non-invited age groups.
• To measure the impact of local policies on opportunistic screening.

Main Methods:

• Collected data on all diagnostic mammographies in Denmark (2000).
• Gathered data on women targeted by organized screening programs in Copenhagen and Fyn.
• Linked data using the Danish personal identification number and collected information on county-level opportunistic screening policies.

Main Results:

• Diagnostic mammography use was low (1-3%) for both attendees and non-attenders in organized screening.
• Use was higher in Copenhagen than Fyn, linked to private clinic availability; urbanisation showed a positive correlation.
• Official policies on opportunistic screening and age group contamination had no significant impact on diagnostic mammography use.

Conclusions:

• Non-attenders in organized mammography screening programs do not utilize services outside the program.
• Positive policies towards opportunistic screening did not enhance uptake.
• Well-organized screening programs remain the most effective strategy for achieving high mammography coverage.