Table 7 Sensitivity, specificity, positive predictive value and negative predictive value for all cause mortality in the study group.
| Sens (%) | Spec (%) | PPV (%) | NPV (%) | |
|---|---|---|---|---|
| ⩾10 extrasystoles/h | 43.7 | 81.8 | 13.3 | 95.8 |
| Complex VA | 75.0 | 67.9 | 12.8 | 97.7 |
| LF amplitude <15.7 ms | 50.0 | 76.5 | 11.8 | 96.1 |
| LF:HF ratio <1.12 | 53.1 | 76.3 | 12.3 | 96.3 |
| Complex VA and low LF | 37.5 | 92.2 | 23.1 | 95.6 |
| Complex VA and low LF:HF | 43.7 | 92.0 | 25.4 | 94.4 |
HF, high frequency; LF, low frequency; NPV, negative predictive value; PPV, positive predictive value; Sens, sensitivity; Spec, specificity; VA, ventricular arrhythmias.