Presence and absence of heart failure (HF) per score category with the improved rule, and corresponding sensitivity, specificity and predictive values when dichotomised at different thresholds
| Risk category (points) | HF (n=98) | No HF (n=487) | Sensitivity | Specificity | Positive predictive value | Negative predictive value |
|---|---|---|---|---|---|---|
| Very low (≤9), n=268 | 5 | 263 | ||||
| Low (10–15), n=128 | 11 | 117 | 0.95 | 0.54 | 0.29 | 0.98 |
| Medium (16–21), n=149 | 53 | 96 | 0.84 | 0.78 | 0.43 | 0.96 |
| High (22–30), n=40 | 29 | 11 | 0.30 | 0.98 | 0.73 | 0.87 |