Table 5.
Summary of five studies using different techniques to measure heart rate, respiration rate, and temperature in patient with influenza and healthy controls.
| Paper | System | Number of subjects | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | ||
|---|---|---|---|---|---|---|---|---|
| Patient | Control | Fever-based | All | |||||
| Sun, 201775 | CMOS camera equipped with IRT | 16 | 22 | 68.70 | 87.50 | 100 | 100 | 91.70 |
| Negishi, 201976 | 12 | 13 | — | — | — | — | — | |
| Matsui, 201077 | Doppler blood-flow meter, 10-GHz microwave radar, thermography | 57 | 35 | — | 88 | 89 | 93 | 82 |
| Yao, 201678 | 57 | 35 | — | 93 | — | — | — | |
| Sun, 201579 | Radar, finger-tip photoreflector, thermography | 35 | 48 | — | 97.10 | 81.30 | 79.10 | 97.50 |