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. 2025 Jan 22;77(3):1401–1409. doi: 10.1007/s12070-025-05351-5

Table 7.

Comparison of change in voice parameters in study subjects with different relation of EBSLN to the superior Pole

Preop 1 day after the operation P-value
With preop
1 week after the operation P-value
with preop
Type 1 EBSLN
Mean F0 (Hz) 221.798 ± 41.011 219.543 ± 44.598 0.13 221.495 ± 43.555 0.85

Pitch → sigma

(Hz)

16.689 ± 17.246 17.599 ± 16.307 0.24 16.047 ± 16.524 0.21
Jitter 0.45%±0.14% 0.47%±0.22% 0.78 0.43%±0.14% 0.23

Shimmer

(dB)

0.544 ± 0.213 0.547 ± 0.221 0.99 0.569 ± 0.193 0.18
HNR (dB) 19.899 ± 2.813 20.092 ± 3.535 0.47 19.280 ± 2.310 0.32
Type 2a EBSLN
Mean F0 (Hz) 217.091 ± 52.281 213.899 ± 52.656 0.16 217.135 ± 51.343 0.87

Pitch → sigma

(Hz)

14.968 ± 12.350 16.037 ± 13.873 0.38 16.883 ± 13.402 0.05
Jitter 0.47%±0.24% 0.44%±0.22% 0.07 0.45%±0.23% 0.08

Shimmer

(dB)

0.774 ± 0.488 0.741 ± 0.445 0.20 0.764 ± 0.448 0.95
HNR (dB) 17.589 ± 4.109 17.996 ± 5.188 0.50 17.782 ± 4.781 0.87
Type 2b EBSLN
Mean F0 (Hz) 224.382 ± 50.325 218.374 ± 49.188 < 0.01 220.714 ± 47.636 0.30

Pitch → sigma

(Hz)

16.642 ± 15.413 18.850 ± 15.895 < 0.01 17.875 ± 16.561 0.21
Jitter 0.47%±0.17% 0.44%±0.22% 0.23 0.45%±0.23% 0.60

Shimmer

(dB)

0.495 ± 0.216 0.456 ± 0.209 0.38 0.453 ± 0.209 0.47
HNR (dB) 19.710 ± 4.376 18.792 ± 4.044 0.04 19.142 ± 3.826 0.35