Table 4.
Partial correlations among HRV and clinical measurements.
| HR | HF | LF | LF/HF | RMSSD | SDNN | pNN50 | |
|---|---|---|---|---|---|---|---|
| K-CDI-2 | -0.260 | -0.050 | 0.409** | 0.303 | 0.054 | 0.169 | -0.055 |
| K-RCMAS-2 | -0.310* | -0.340* | 0.295 | 0.409** | -0.135 | 0.070 | -0.220 |
| Stress | -0.124 | -0.133 | 0.118 | 0.275 | -0.300 | 0.024 | -0.382* |
Controlling for gender and age as covariates. K-CDI-2, Korean Version Children Depression Inventory 2nd Edition; K-RCMAS-2, The Revised Children’s Manifest Anxiety Scale Korean Version 2nd Edition; Stress, Stress Scale; HR, Heart Rate; HF, High-Frequency Power; LF, Low-Frequency Power; LF/HF, Ratio of Low-Frequency to High-Frequency; RMSSD, Root Mean Square of the Successive Difference; SDNN, Standard Deviation of Normal to Normal Interval; pNN50, The proportion of NN50 divided by the total number of NN (R-R) intervals.
*p <.05, **p <.01.