Respiratory and voice outcomes of office-based injection laryngoplasty in patients with unilateral vocal fold paralysis

The Egyptian Journal of Otolaryngology

Table 5 Pre-injection and post-injection follow ups of acoustic and aerodynamic analysis

Acoustics and aerodynamics		Percentiles	Pre-injection scores	1 week post-injection scores	3 months post-injection scores	Test of significance
Acoustic parameters	Shimmer (%)	25th 50th 75th	7.47 10.65 20.2	2.8 4.43 8.78	2.15 3.14 8.53	Friedman χ2 = 8.6 P = 0.013*	Wilcoxon P1 = 0.02* P2 = 0.008* P3 = 0.67
	Jitter (%)	25th 50th 75th	0.76 1.29 3.6	0.42 0.46 0.91	0.41 0.69 0.87	Friedman χ2 = 13.5 P = 0.001*	Wilcoxon P1 = 0.008* P2 = 0.008* P3 = 0.76
	H/N ratio (dB)	25th 50th 75th	6 11.8 18.6	13 20 22.4	9.8 17.8 20.8	Friedman χ2 = 8.2 P = 0.016*	Wilcoxon P1 = 0.015* P2 = 0.1 P3 = 0.86
Aerodynamics	MPT (s)	25^th 50^th 75^th	2.65 3.28 5.65	3.7 7 10.23	4.25 7.1 10.25	Friedman χ2 = 14 P = 0.001*	Wilcoxon P1 = 0.008* P2 = 0.008* P3 = 0.37

Friedman test was used for non-parametric data, χ2 Pearson’s chi-square, Wilcoxon test is used to compare each 2 measures, *P value < 0.05 is significant, P value > 0.05 non-significant, P1 pre-injection versus 1 week post-injection, P2 pre-injection versus 3 months post-injection, P3 1 week post-injection 1 versus 3 months post-injection