Objective To assess differences between cardiovascular disease (CVD) risk estimation methods when applied to a black UK population.
Design Cross-sectional study.
Setting 51 GP practices in Lambeth, south-east London.
Patients 26 370 black and 52 288 white registered patients aged 40–74 years.
Main outcome measures 10-year CVD risk score estimates derived using Framingham, QRISK2, ASSIGN and ETHRISK algorithms. κ measures of agreement between risk scores and age-adjusted black/white mean risk ratios (RR) derived for each score.
Results There was a moderate agreement between the various risk scores for the black population (pooled κ 0.59 (95% CI 0.57 to 0.61) for men and 0.42 (95% CI 0.39 to 0.46) for women). For the white population, agreement was significantly improved (pooled κ 0.74 (95% CI 0.73 to 0.76) for men and 0.51 (95% CI 0.49 to 0.54) for women). Except for QRISK2, each method consistently overpredicted the CVD risk for the black population in comparison with national (Health Survey for England) prevalence figures. QRISK2 estimates were the least divergent from national data, giving a black/white mean RR of 0.73 (95% CI 0.71 to 0.74) for men and 0.85 (95% CI 0.83 to 0.87) for women.
Conclusions The choice of risk estimation method does make a difference to estimates of CVD risk for black patients. The QRISK2 method, which incorporates ethnicity as a risk factor, appears to have the best fit with national data for this population.
Statistics from Altmetric.com
This web only file has been produced by the BMJ Publishing Group from an electronic file supplied by the author(s) and has not been edited for content.
Files in this Data Supplement:
- Data supplement 1 - Online Appendix 1
Funding The study was supported by a grant from the Guy's and St Thomas' Charity.
Competing interests None.
Ethics approval Ethical approval was given by the South East Research Ethics Committee (07/MREOI/26).
Provenance and peer review Not commissioned; externally peer reviewed.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.