Pulse checking results for the return of spontaneous circulation for all conventional methods and the three smart watch method
| Method of pulse checking | Sensitivity (%) | Specificity (%) | False positive (%) | False negative (%) |
| Carotid palpation | 78.6 | 90.4 | 9.6 | 21.4 |
| Pulse check by smart watch | ||||
| In the carotid region | 100 | 78.7 | 21.3 | 0 |
| In the forehead region | 92.9 | 80.9 | 19.1 | 7.1 |
| In the wrist region | 78.6 | 100 | 0 | 21.4 |