Acoustic Correlates of Compensatory Adjustments to the Glottic and Supraglottic Structures in Patients with Unilateral Vocal Fold Paralysis

Table 4

Comparison of jitter, shimmer, and HNR between normal and UVFP subjects.

	UVFP		Normal		or	value
		Mean ± SD		Mean ± SD
Jitter ppq5 (%)	17	1.06 ± 1.02	85	0.26 ± 0.18		<0.001
Shimmer apq11 (%)	17	10.16 ± 3.34	85	7.14 ± 3.22		0.001
HNR (dB)	17	10.11 ± 4.94	85	14.75 ± 4.46		<0.001

UVFP: Unilateral Vocal Fold Paralysis; SD: standard deviation; : -test;  U: Mann-Whitney test.