A Pilot Analysis of Bioparameters in Patients with Dyspepsia Accompanied by Abdominal Hardness: An Exploration of <i>Damjeok</i> Syndrome Rooted in Traditional Medicine.

The frequency domain (both LF and HF power) also exhibited a tendency toward a negative correlation with the epigastric symptom score (as a more prominent correlation in HF, r = −0.42, p = 0.1); however, these indices, including the ratio, did not reach statistical significance ( Figure 2 E,F). 3.4.

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