Table 6.
Root-mean-squared error (RMSE) between reference blood pressure (BP) versus BP calibrated from scale pulse transit time (PTT), wrist PTT, and pulse arrival time (PAT) (mean +/− SE). DP: diastolic BP. SP: systolic BP. ǂp < 0.025 with respect to PAT (paired t-test).
| [mmHg] | DP | SP | |||
|---|---|---|---|---|---|
| Green PPG | IR PPG | Green PPG | IR PPG | ||
| Scale PTT | PTTS1 | 7.2 +/− 0.5 | 7.5 +/− 0.4 | 10.9 +/− 0.8 | 10.8 +/− 0.5 |
| PTTS2 | 7.1 +/− 0.4 | 7.4 +/− 0.4 | 10.8 +/− 0.7 | 10.7 +/− 0.6 | |
| Wrist PTT | PTTW1 | 6.6 +/− 0.5ǂ | 7.0 +/− 0.4ǂ | 9.7 +/− 0.6 | 9.9 +/− 0.6 |
| PTTW2 | 6.1 +/− 0.4ǂ | 6.5 +/− 0.5ǂ | 8.9 +/− 0.6 | 9.6 +/− 0.8 | |
| PAT | 8.0 +/− 0.6 | 9.0 +/− 0.6 | 10.6 +/− 0.7 | 11.2 +/− 1.0 | |