About Us

The Small Area Health Statistics Unit (SAHSU) was originally established in 1987 following the recommendations of the Black Enquiry, a national investigation into the incidence of leukaemia in children and young adults near the Sellafield nuclear plant. 
The main aim of SAHSU has been to assess the risk of exposure to environmental factors, to the health of the population, with an emphasis on the use and interpretation of routine health statistics.

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Our Research

SAHSU is a nationally and internationally recognised institution for research into environment and health, with over 200 scientific publications and impact on health policy. SAHSU is currently undertaking a number of major research projects, with increasing attention being given to improving exposure assessment techniques.

SAHSU maintains a wide range of routinely collected health and environmental data at small area level. A key focus of its work is the development of methods in spatial statistical analysis to investigate potential associations between environmental factors and health.

SAHSU works with a multi-disciplinary team that collaborates extensively with other departments within Imperial College and with external institutions in the UK, Europe and the USA.

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The work of the UK Small Area Health Statistics Unit is funded by Public Health England as part of the MRC-PHE Centre for Environment and Health, funded also by the UK Medical Research Council.