Accuracy (with 95% confidence intervals) of the New Zealand chart, Sheffield table, and Joint British Societies chart for predicting cardiovascular disease risk ≥ 20% over 10 years in 202 patients with uncomplicated mild hypertension
| New Zealand chart | Sheffield table | Joint Societies chart | |
|---|---|---|---|
| NPV, negative predictive value; PPV, positive predictive value. | |||
| Sensitivity (%) | 75 (64 to 86) | 81 (71 to 91) | 63 (51 to 75) |
| Specificity (%) | 96 (92 to 99) | 96 (92 to 99) | 98 (95 to 100) |
| PPV (%) | 88 (79 to 97) | 89 (81 to 97) | 93 (85 to 100) |
| NPV (%) | 90 (85 to 95) | 92 (87 to 96) | 86 (80 to 91) |