Real-time analysis of physiological data to support medical applications

For filtering artifacts, designed modules have usually applied threshold-based methods or used statistical tools to interpolate missing data points.

“According to the literature, for filtering artifacts, designed modules have usually applied threshold-based methods to filter sensor data [36,60] or used statistical tools to interpolate the missing data points [61].”

In the time domain, extracted features usually include basic waveform characters and statistical parameters such as mean, variance, pick counts.

“In the time domain, the extracted features usually include basic waveform characters and statistical parameters related to the visible attributes in data stream such as mean, variance, pick counts, etc. [36,61].”

Besides time and frequency domain features, other considered features include heuristic and specific field features.

“Besides the features from these domains, there are other considered features which such as heuristic and specific field features [61].”

Other tools for feature selection used in literature include threshold-based rules, ANOVA, and Fourier transforms.

“Other tools for feature selection used in the literature includes threshold-based rules [61], analysis of variance (ANOVA) [51], and Fourier transforms [52].”

In most research in health monitoring systems, simple statistical parameters or statistical functions are adequate to formulate the data and retrieve expected information.

“In the most of research in health monitoring systems, dealing with the simple statistical parameters (e.g., mean, variance etc.) or statistical functions e.g., risk function [61], factor analysis [68]) would be adequate to formulate the data and retrieve the expected information [38].”

Some data analysis systems in healthcare were designed to process short signals such as few minutes of ECG data, a few hours of heart rate or oxygen saturation, and measurement of blood pressures for a day.

“Some data analysis systems in healthcare were designed to process short signals such as few minutes of ECG data [74,92], a few hours of heart rate or oxygen saturation [60,61] and the measurement of blood pressures for a day [56].”