표 4. | Table 4. 후두의 상대적 높이를 예측하는 단계적 회귀모형의 요약 | Summary of stepwise regression model predicting the relative height of the larynx

Acoustic parameters	R	R2	R2 change	Adjusted R2	F change	df	Beta	p-value	t-value	VIF
A1	.683	.466	.466	.462	129.081	1,148	–.169	.007**	–2.725	3.352
F3	.773	.597	.132	.592	48.049	1,147	.469	<.001***	12.313	1.262
A3	.847	.717	.119	.711	61.495	1,146	–.514	<.001***	–9.159	2.736
F2	.892	.796	.080	.791	56.635	1,145	.476	<.001***	9.029	2.415
H1	.905	.819	.022	.812	17.640	1,144	–.119	.018*	–2.393	2.158
SR	.908	.825	.006	.818	5.262	1,143	.180	.001**	3.468	2.351
A2	.913	.833	.008	.824	6.571	1,142	.123	.033*	2.157	2.805
F1	.915	.838	.005	.829	4.345	1,141	.092	.039*	2.084	1.703

p<.05,
p<.01.
p<.001.
A, amplitude of formant frequency; F, formant frequency; H, amplitude of harmonic; SR, L/H spectral ratio, VIF, variance inflation factor.