Accuracy of LA strain to predict outcomes after one catheter ablation (CA) procedure (primary endpoint)
| Recurrence of AF after one CA procedure | |||||
| Specificity | Sensitivity | PPV | NPV | Accuracy | |
| (95% CI) | (95% CI) | (95% CI) | (95% CI) | (95% CI) | |
| LA strain <10% | 97.9% | 78.2% | 97.7% | 79.3% | 87.3% |
| (88.9% to 99.6%) | (65.6% to 87.1%) | (88.2% to 99.6%) | (67.2% to 87.7%) | (80.8% to 93.7%) | |
| Non-recurrence of AF after one CA procedure | |||||
| Specificity | Sensitivity | PPV | NPV | Accuracy | |
| (95% CI) | (95% CI) | (95% CI) | (95% CI) | (95% CI) | |
| LA strain >14.5% | 92.7% | 74.5% | 89.7% | 81.0% | 84.3% |
| (82.7% to 97.1%) | (60.5% to 84.7%) | (76.4% to 95.9%) | (69.6% to 88.8%) | (77.3% to 91.4%) | |
Recurrence and non-recurrence of AF during the follow-up period of 15 months. AF, atrial fibrillation; NPV, negative predictive value; PPV, positive predictive value.