Table 5.
Correlation (R2) between linear and nonlinear variables with age
| Variable | R2 |
|---|---|
|
SDNN (ms) |
0.31 |
|
RMSSD (ms) |
0.24 |
|
VLF (ms2) |
−0.11 |
|
LF (ms2) |
−0.39 |
|
HF (ms2) |
−0.32 |
|
α1 |
<0.01 |
|
α2 |
0.22 |
| -ApEn | <0.01 |
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