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Changes in Canadian women's mammography rates since the implementation of mass screening programs
C E De Grasse1, A M O'Connor, J Boulet
1Clinical Services, Ottawa Regional Women's Breast Health Centre, Ottawa Hospital, Ontario, Canada.
Objectives:
This study reports on Canadian mammography rates between 1990, when mass screening programs were launched, and 1994/95.
Methods:
Mammography rates from 2 national surveys were compared according to the presence of a provincial screening program.
Results:
Mammography rates among women aged 50 to 69 years (the targeted group) increased significantly, by 16%; increases were twice as high in provinces with screening programs. Among women in their 40s (nontargeted group), the changes were insignificant and independent of screening program status.
Conclusions:
Screening programs appear to have influenced the mammography rates of targeted women aged 50 to 69 years.