표 3. | Table 3. 후두의 위치에 따른 음질 관련 음향학적 측정치의 비교 | Comparison of acoustic measures related to voice quality according to the laryngeal positions

Laryngeal positions	High	Middle	Low	F-value	p-value
Jitt (%)	0.47±0.27	0.37±0.25	0.35±0.19	3.275	.042*
Shim (%)	2.39±0.97	2.11±0.97	2.02±0.72	1.855	.002**
NHR	0.13±0.01	0.13±0.02	0.13±0.02	4.074	.020*
CPP (dB)	13.83±2.00	13.64±1.48	13.34±1.22	9.388	.001**
σCPP (dB)	0.53±0.22	0.50±0.11	0.49±0.11	1.736	.189
SR (dB)	37.49±6.43	40.46±4.50	41.48±4.33	19.649	<.001***
σSR (dB)	1.48±0.54	1.46±0.50	1.28±0.37	3.501	.034*
CSID	–3.87±13.01	–6.35±9.17	–7.56±8.99	6.26	.006**

Values are presented as mean±SD.
p<.05,
p<.01.
p<.001.
Jitt, jitter%; Shim, shimmer%; NHR, noise-to-harmonic ratio; CPP, cepstral peak prominence; SR, L/H spectral ratio; σ, SD; CSID, Cepstral Spectral Index of Dysphonia.