Table 3.
Group Sizes and Numbers of Primary Endpoints, Sensitivities, Specificities, and Positive and Negative Predictive Values for Selected Subroups Defined by LVEF and PESP
| Risk‐Stratification Criterion | e/n | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
|---|---|---|---|---|---|
| LVEF ≤35% alone | 20/87 | 27.8 | 92.3 | 23.0 | 93.9 |
| LVEF ≤35% or LVEF >35% and PESP present | 31/134 | 43.1 | 88.1 | 23.1 | 94.9 |
e indicates number of primary endpoints; LVEF, left ventricular ejetion fraction; n, size of subgroup; NPV, negative predictive value; PESP, postextrasystolic potentiation; PPV, positive predictive value.