Table 3.

Vertical phase difference group comparisons by line scan position. Polyps were separated by lesioned and non-lesioned vocal fold.

Vertical Phase Difference	Control	Polyp	Nodule	P
25%
Lesioned VF for polyps	0.966	0.892	0.658	0.140
Non-lesioned VF for polyps	0.966	0.871	0.658	0.304
50%
Lesioned VF for polyps	1.071	0.952	0.724	*0.004
Non-lesioned VF for polyps	1.071	1.147	0.724	*0.003
75%
Lesioned VF for polyps	1.351	0.727	1.029	*<0.001
Non-lesioned VF for polyps	1.351	0.814	1.029	*0.002

^*Significant P value

VF, vocal fold.