Measure | Unit | Description |
---|---|---|
SD1 | ms | The standard deviation of the PP perpendicular to the line of identity |
SD2 | ms | The standard deviation of the PP along to the line of identity |
En(0.2) | Â | Approximate Entropy computed with the threshold r set to 0.2*SDNN |
En(r max ) | Â | Approximate Entropy computed with the threshold r set to value which maximizes entropy |
En(r chon ) | Â | Approximate Entropy computed with the threshold r set to value computed with the formula proposed by Chon[28] |
D 2 | Â | Correlation Dimension |
α 1 |  | Short term fluctuation slope in Detrended Fluctuation Analysis |
α 2 |  | Long-term fluctuation slope in Detrended Fluctuation Analysis |
l mean | Beats | Mean line length in RP |
l max | Beats | Maximum line length in RP |
REC | % | Recurrence rate |
DET | % | Determinism |
ShEn | Â | Shannon Entropy |