Breast cancer risk in a screening cohort of Asian and white British/Irish women from Manchester UK

D Gareth Evans, Adam R. Brentnall, Michelle Harvie, Susan Astley, Elaine Harkness, Paula Stavrinos, Louise Gorman, Sarah Sampson, Faiza Idries, Donna Watterson, Jack Cuzick, Mary Wilson, Anil Jain, Fiona Harrison, Anthony Maxwell

Research output: Contribution to journalArticlepeer-review


Background: The differences between breast cancer risk factors in white British/Irish and Asian women attending screening in the UK are not well documented.
Methods: Between 2009-15 ethnicity and traditional breast cancer risk factors were self-identified by a screening cohort from Greater Manchester, with follow up to 2016. Risk factors and incidence rates were compared using age-standardised statistics (European standard population).
Results: 879 Asian women and 51,779 unaffected white British/Irish women aged 46-73 years were recruited. Asian women were at lower predicted breast cancer risk from hormonal and reproductive risk factors than white British/Irish women (mean 10 year risk 2.6% vs 3.1%, difference 0.4%, 95%CI 0.3-0.5%)). White British/Irish women were more likely to have had a younger age at menarche, be overweight or obese, taller, used hormone replacement therapy and not to have had children.. However, despite being less overweight Asian women had gained more weight from age 20 years and were less likely to undertake moderate physical activity. Asian women also had a slightly higher mammographic density. Asian age-standardised incidence was 3.2 (95%CI 1.6-5.2, 18 cancers) per thousand women/year vs 4.5 (95%CI 4.2-4.8, 1,076 cancers) for white British/Irish women.
Conclusions: Asian women attending screening in Greater Manchester are likely to have a lower risk of breast cancer than white British/Irish women, but they undertake less physical activity and have more adult weight gain.
Original languageEnglish
JournalBMC Public Health
Early online date25 Jan 2018
Publication statusPublished - 2018


  • Breast cancer
  • Risk factors
  • Ethnicity
  • United Kingdom


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