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Comparative evaluation of the new Sheffield table and the modified joint British societies coronary risk prediction

K S Rabindranath1, N R Anderson, R Gama

  • 1Department of Medicine, New Cross Hospital, Wolverhampton, West Midlands, UK.

Postgraduate Medical Journal
|August 2, 2002
PubMed

Insights

The new Sheffield table and modified Joint British Societies (JBS) coronary heart disease (CHD) risk charts demonstrate high accuracy in primary care. Both tools are reliable for assessing patient risk, allowing clinicians to choose based on preference.

Area of Science:

  • Cardiology
  • Preventive Medicine
  • Health Informatics

Background:

  • Coronary heart disease (CHD) risk assessment guides management of borderline hypertension and hypercholesterolemia.
  • Traditional CHD risk prediction relies on Framingham equations, often simplified by tools like the Sheffield table and Joint British Societies (JBS) chart.
  • Simplifications in these charts, such as dichotomizing blood pressure or approximating age, may impact diagnostic accuracy.

Purpose of the Study:

  • To evaluate and compare the diagnostic performance of the new Sheffield table and the modified JBS chart.
  • To assess these tools against individualized, laboratory-based CHD risk calculations.

Main Methods:

  • Diagnostic performance evaluation of two CHD risk assessment tools.
  • Comparison against a laboratory-based CHD risk calculation.
  • Study conducted on 1102 subjects in a primary care setting.

Main Results:

  • Both the new Sheffield table and modified JBS chart exhibited high diagnostic accuracy, with similar sensitivity and specificity at 10-year CHD risk thresholds of 15% and 30%.
  • The modified JBS chart offers a graded risk display, potentially advantageous over the Sheffield table's threshold identification.
  • The Sheffield table uniquely functions as a screening tool for cholesterol measurement.

Conclusions:

  • The new Sheffield table and modified JBS chart are validated for primary care use, with diagnostic accuracy unaffected by approximations in age and blood pressure.
  • Clinicians are advised to select the risk assessment tool they are most comfortable using.
  • Both tools provide reliable CHD risk assessment in primary care settings.
Abstract

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