TABLE 3.
Averaged 10-fold cross-validated univariate predictor model diagnostic performance values for detection of atrial fibrillation.
| Univariate predictor models | AUC* | Sensitivity | Specificity | PPV | NPV | Accuracy |
| Pulse-interval | ||||||
| PIN_mean | 0.780 | 72.2 | 72.2 | 69.6 | 75.0 | 72.1 |
| PIN_RMSSD | 0.867 | 77.4 | 80.9 | 78.5 | 79.8 | 78.8 |
| PIN_AFE | 0.977 | 96.0 | 92.9 | 93.1 | 97.0 | 94.7 |
| PIN_COSEn | 0.964 | 92.3 | 92.1 | 91.4 | 93.2 | 92.2 |
| PIN_TPR | 0.841 | 80.1 | 72.3 | 71.7 | 81.1 | 76.0 |
| Amplitude | ||||||
| AMP_mean | 0.659 | 59.7 | 60.4 | 57.3 | 63.0 | 59.6 |
| AMP_RMSSD | 0.726 | 46.0 | 82.6 | 70.7 | 63.2 | 65.0 |
| AMP_SampEn | 0.680 | 48.1 | 72.8 | 61.0 | 61.6 | 61.3 |
| AMP_TPR | 0.792 | 72.2 | 73.1 | 71.1 | 74.7 | 72.7 |
| Morphology | ||||||
| AC | 0.982 | 95.1 | 93.7 | 93.5 | 96.2 | 94.4 |
AC, autocorrelation; AF, atrial fibrillation; AFE, AFEvidence; AMP, peak amplitude; AUC, area under the curve; CI, confidence interval; COSEn, coefficient of sample entropy; NPV, negative predictive value; PIN, pulse interval; PPG, photoplethysmography; PPV, positive predictive value; RMSSD, root mean square of successive pulse-to-pulse differences; SampEn, sample entropy; SD, standard deviation; SR, sinus rhythm and TPR, turning point ratio. *The values are percent (%) except AUC is absolute value.