Table 5 Repeatability of the APW features.
From: Arterial and venous peripheral vascular assessment using wearable electro-resistive morphic sensors
APW feature | Intra-class correlation of measurements | 95%-confidence interval |
|---|---|---|
Rise Time (PPG) | 0.747 | 0.609 < ICC < 0.851 |
Rise Time (HeMo) | 0.479 | 0.282 < ICC < 0.662 |
Half Pulse Width (PPG) | 0.861 | 0.774 < ICC < 0.921 |
Half Pulse Width (HeMo) | 0.35 | 0.144 < ICC < 0.559 |
Three Quarters Pulse Width (PPG) | 0.372 | 0.169 < ICC < 0.577 |
Three Quarters Pulse Width (HeMo) | 0.188 | − 0.01 < ICC < 0.414 |
Dicrotic Notch to Diastolic Peak Time (PPG) | 0.667 | 0.504 < ICC < 0.798 |
Dicrotic Notch to Diastolic Peak Time (HeMo) | 0.181 | − 0.011 < ICC < 0.405 |
Systolic peak to diastolic peak time (PPG) | 0.881 | 0.805 < ICC < 0.933 |
Systolic peak to diastolic peak time (HeMo) | 0.209 | 0.008 < ICC < 0.436 |
Stiffness Index (PPG) | 0.854 | 0.764 < ICC < 0.917 |
Stiffness Index (HeMo) | 0.294 | 0.086 < ICC < 0.513 |
Augmentation Index (PPG) | 0.926 | 0.876 < ICC < 0.959 |
Augmentation Index (HeMo) | 0.324 | 0.116 < ICC < 0.538 |
Pulse Width (PPG) | 0.879 | 0.802 < ICC < 0.932 |
Pulse Width (HeMo) | 0.823 | 0.714 < ICC < 0.899 |
