Mammographic densities of Aboriginal and non-Aboriginal women living in Australia's Northern Territory

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Tapia, Kriscia A.
Garvey, Gail
McEntee, Mark F.
Rickard, Mary
Lydiard, Lorraine
Brennan, Patrick C.
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Objectives: To compare the mammographic densities and other characteristics of Aboriginal and non-Aboriginal women screened in Australia. Methods: Population screening programme data of Aboriginal (n = 857) and non-Aboriginal women (n = 3236) were used. Mann–Whitney U test compared ages at screening and Chi-square tests compared personal and clinical information. Logistic regression analysis was used for density groupings. OR and 95% CI were calculated for multivariate association for density. Results: Mammographic density was lower amongst Aboriginal women (P < 0.001). For non-Aboriginal women, higher density was associated with younger age (OR 2.4, 95% CI 2.1–2.8), recall to assessment (OR 2.2, 95% CI 1.6–3.0), family history of breast cancer (OR 1.4, 95% CI 1.2–1.6), English-speaking background (OR 1.4, 95% CI 1.2–1.6), and residence in remote areas (OR 1.2, 95% CI 1.1–1.4). For Aboriginal women, density was associated with younger age (OR 2.7, 95% CI 2.0–3.5; P < 0.001), and recall to assessment (OR 2.3, 95% CI 1.4–3.9; P < 0.05). Conclusions: Significant differences between Aboriginal and non-Aboriginal women were found. There were more significant associations for dense breasts for non-Aboriginal women than for Aboriginal women.
Aboriginal Australians , Mammographic density , Breast cancer
Tapia, K. A., Garvey, G., McEntee, M. F., Rickard, M., Lydiard, L. and Brennan, P. C. (2019) 'Mammographic densities of Aboriginal and non-Aboriginal women living in Australia’s Northern Territory', International Journal of Public Health, 64(7), pp. 1085-1095. doi: 10.1007/s00038-019-01237-w
© Swiss School of Public Health (SSPH+) 2019. Published by Springer Nature. This is a post-peer-review, pre-copyedit version of an article published in International Journal of Public Health. The final authenticated version is available online at: