Table 4

 Comparison of QRISK and Anderson Framingham risk equation in classification of patients’ 10 year risk of cardiovascular disease (low (<20%) or high (≥20%)) and observed and predicted risk

Anderson FraminghamQRISK
MenWomen
Low riskHigh riskLow riskHigh risk
Low risk
No of patients420 0003 548506 47810 697
No of cardiovascular events12 97556613 4861 446
% of patients classified79.30.793.32.0
Average predicted risk of cardiovascular event (%):
 QRISK5.424.74.823.8
 Anderson Framingham9.017.006.115.2
Observed risk % (95% CI)6.5 (6.4 to 6.7)25.5 (23.1 to 28.1)5.3 (5.2 to 5.5)23.1 (21.6 to 24.7)
High risk
No of patients57 19949 06613 56612 246
No of cardiovascular events5 2437 1791 3241 771
% of patients classified10.89.32.502.3
Average predicted risk of cardiovascular event (%):
 QRISK15.226.815.325.9
 Anderson Framingham24.633.123.928.0
Observed risk % (95% CI)17.5 (16.9 to 18.1)26.3 (25.6 to 27.1)16.8 (15.7 to 18)24.2 (22.9 to 25.6)