IMPACT Coronary Heart Disease Policy and Prevention Model


The Department of Public Health and Policy has developed an international preventative policy model, IMPACT, which has been tested, refined and validated since 2001.

IMPACT is now used to explain coronary heart disease (CHD) mortality trends in over twenty diverse populations, including England and Wales, Scotland, Northern Ireland, Ireland, Finland, Sweden, Iceland, Poland, the Czech Republic, Italy, Spain, Syria, Palestine, Tunisia, Turkey, China, New Zealand, Canada and the USA.


The aim of IMPACT is to explain falls in CHD mortality in recent decades through synthesising a range of data to develop an innovative and comprehensive model of policy and prevention. It investigates the following components:

  • Major risks factors, such as smoking, cholesterol, age and gender
  • Patient groups, such as suffers of angina, heart failure
  • Treatments, including medicines and surgery (and the cost-effectiveness of treatment)
  • Outcomes, measuring death, survival rates, and life-years gained in adults.


The results of IMPACT now inform policy and debate across the globe, predominately in the UK, Europe and the US. It highlights the major contributors to one of the greatest healthcare risks to adults and shows that in the UK making small reductions in key risk factors could halve CHD deaths.

The model highlights the key attributes for the widespread declines in cardiovascular mortality rates, which include population-wide improvements in risk factors, including smoking, blood pressure and cholesterol (changes to diet) and the use of medical treatments for acute cases such as chronic cardiovascular disease.