Table 3.
Comparison of heart rate spectral analysis between case and control groups
| Variables | Case group Median (Q1 - Q3) | Control group Median (Q1 - Q3) | p-value |
|---|---|---|---|
| LF supine position (ms2) | 157.0 (83.6 - 323.3) | 275.0 (164.0 - 439.5) | 0.014 |
| HF supine position (ms2) | 111.0 (50.5 - 368.5) | 141.0 (65.0 - 342.5) | 0.873 |
| LF/HF supine position (ms2) | 1.5 (0.7 - 2.4) | 1.8 (0.9 - 4.1) | 0.054 |
| LF orthostatism (ms2) | 161.5 (71.5 - 333.6) | 242.0 (128.5 - 375.0) | 0.075 |
| HF orthostatism (ms2) | 66.0 (29.0 - 229.5) | 91.0 (33.5 - 247.1) | 0.898 |
| LF/HF orthostatism (ms2) | 1.8 (1.0 - 3.3) | 2.4 (1.2 - 6.1) | 0.096 |
SD: standard deviation; LH: low frequency; HF: high frequency; LH/HF: low frequency/high frequency ratio; ms: milliseconds. Mann-Whitney test; Q1: 25th percentile; Q3: 75th percentile