Research Article

Investigating Properties of the Cardiovascular System Using Innovative Analysis Algorithms Based on Ensemble Empirical Mode Decomposition

Table 2

Correlations among the SAP, RI, and phase shift. According to the interpretation rules used in this study, represents a moderate correlation and represents a significant correlation.

Physiological signal/indexCorrelation coefficientCorrelation

EEMD-based RIReferred RI0.759Positive and significant
EEMD-based RIPhase shift−0.707Negative and significant
Referred RIPhase shift−0.543Negative and moderate
SAPEEMD-based RI0.708Positive and significant
SAPReferred RI0.731Positive and significant
SAPPhase shift−0.693Negative and significant