Table 3.
Optimal ΔHR at different time intervals during the sitting test for prediction of orthostatic tachycardia.
| AUC (95%CI) | Cutoff values | Sensitivity | Specificity | |
|---|---|---|---|---|
| ΔHR 1 min | 0.786 (0.673–0.899) | 19 bpm | 70.0% | 74.2% |
| ΔHR 3 min | 0.837 (0.737–0.936) | 18 bpm | 86.7% | 71.0% |
| ΔHR 5 min | 0.875 (0.791–0.959) | 22 bpm | 66.7% | 87.1% |
| ΔHR 10 min | 0.801 (0.668–0.915) | 22 bpm | 70.0% | 87.1% |
| ΔHRmax | 0.867 (0.775–0.959) | 22 bpm | 83.3% | 83.9% |
ΔHR 1/3/5/10 min, change of HR from supine to sitting at 1, 3, 5, and 10 min; ΔHRmax, maximum change of HR during the 10 min of the sitting test; AUC, area under curve; 95% CI, 95% confidence interval.