Characteristics of tests to detect left ventricular systolic dysfunction*
| Test characteristics | Sensitivity (95% CI) | Specificity (CI) | +LR | −LR |
|---|---|---|---|---|
| *Abbreviations defined in glossary; +LR and CIs calculated from data in article. | ||||
| Abnormal electrocardiographic results | 87% (60 to 98) | 56% (46 to 65) | 1.96 | 0.24 |
| N-terminal atrial natriuretic peptide level >0.8 nmol/l | 43% (18 to 71) | 89% (81 to 94) | 3.82 | 0.62 |
| Heart rate >diastolic pressure | 53% (27 to 79) | 86% (79 to 92) | 3.91 | 0.55 |