In the frequency domain analysis, the LF of ED group was significantly lower than that of CP/CPPS+ED group (p = 0.044) and control group (p = 0.005), HF power was significantly higher in healthy controls compared to patients with ED (p < 0.001), CP/CPPS (p < 0.001) and CP/CPPS+ED (p < 0.001), and the CP/CPPS+ED patients had significantly higher LF/HF ratio than the controls (p = 0.001; Table 3 and Figure 6). This evidence concerns the gene CP and hydrops fetalis.