PPG and ECG feature comparison for healthy people and hypertensive patients

In this paper, we analyzed three novel features derived from PPG (photoplethysmography) of healthy people and hypertensive patients, which are pulse pressure, correlation between RR interval (the interval between two adjacent R wave in the electrocardiography signal) and PP interval (the interval between two adjacent P wave in the PPG signal), and PWTT (Pulse Wave Transfer Time). The experiments showed that there are significant differences in three features between healthy people and hypertensive patients. And these features can be indicators of hypertension.