Table 4: HRV parameters for healthy controls and acute and chronic tinnitus patients.

HRV parameterHealthy controlsTinnitus patients value
AcuteChronic

TP (ms2)7.49 ± 0.996.99 ± 1.236.86 ± 1.090.063
VLF (ms2)6.37 ± 0.926.18 ± 1.326.01 ± 1.120.461
LF (ms2)5.98 ± 1.195.52 ± 1.365.56 ± 1.220.288
HF (ms2)6.41 ± 1.19a5.31 ± 1.34b4.97 ± 1.52b0.000**
LF/HF0.94 ± 0.11a1.85 ± 2.13a, b3.05 ± 4.32b0.007*

HRV data were log-transformed prior to statistical analysis. The values given are the mean ± SD. Statistical significance was set at a value < 0.05, using analysis of variance (ANOVA). If there were statistically significant differences between groups, the post hoc test (Duncan) was used to identify them with “a, b”. TP: total power; VLF: very low frequency; LF: low frequency; HF: high frequency; LF/HF: ratio of absolute LF to HF power; * ; ** .