Table 2.
Detailed diagnostic performance of the photoplethysmography technology for atrial fibrillation screening in different smart devices.
| Index | Smart bands | Mobile phones | Mobile phone 1 | Mobile phone 2 |
| Sensitivity, % (95% CI) | 95.36 (92.00-97.40) | 94.96 (91.51-97.11) | 94.41 (88.91-97.38) | 95.56 (90.16-98.18) |
| Specificity, % (95% CI) | 99.70 (98.08-99.98) | 99.70 (98.07-99.98) | 100 (97.20-100) | 99.40 (96.18-99.97) |
| PPVa, % (95% CI) | 99.63 (97.61-99.98) | 99.62 (97.59-99.98) | 100 (96.55-100) | 99.23 (95.16-99.96) |
| NPVb, % (95% CI) | 96.24 (93.50-97.90) | 95.95 (93.15-97.68) | 95.43 (90.88-97.86) | 96.49 (92.17-98.57) |
| Accuracy, % (95% CI) | 97.72 (96.11-98.70) | 97.55 (95.89-98.57) | 97.42 (94.78-98.80) | 97.67 (95.05-98.97) |
aPPV: positive predictive value.
bNPV: negative predictive value.