Dr Siân Sweetland
Contact information
Siân Sweetland
BSc MSc DPhil
Senior Statistical Epidemiologist
Siân Sweetland joined the Cancer Epidemiology Unit (CEU) as a statistician in 2002, working mainly on individual and collaborative studies of cervical cancer. She completed a DPhil on risk factors for pulmonary embolism in 2008, and is now a statistical epidemiologist working on various research projects within the Million Women Study.
Siân’s particular research interest is in venous thromboembolism and she is currently investigating the relationship between cancer and venous thromboembolism. Siân is also a principal member of the Collaborative Group on Epidemiological Studies of Endometrial Cancer.
Recent publications
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Ethnicity and breast cancer incidence in over 329 500 women in England in 2011-2019.
Journal article
T G. et al, (2025), Eur J Surg Oncol
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Ethnicity and breast cancer incidence in over 329,500 women in England in 2011-2019.
Journal article
Gathani T. et al, (2025), Eur J Surg Oncol
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A comparative analysis of risk factor associations with interval and screen-detected breast cancers: A large UK prospective study.
Journal article
Barnes I. et al, (2024), Int J Cancer, 155, 979 - 987
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Adiposity and risk of oesophageal cancer subtypes in the Million Women Study.
Journal article
Sweetland S. et al, (2023), Int J Epidemiol, 52, 1795 - 1804
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Age and sex can predict cancer risk in people referred with breast symptoms.
Journal article
Gathani T. et al, (2023), BMJ, 381