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The Egyptian Journal of Otolaryngology

Table 3 Comparison between pre-injection and post-injection results of the VHI

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

VHI percentile values

Pre-injection scores

1 week post-injection scores

3 months post-injection scores

Test of significance

25th

54

22

28

Friedman

Wilcoxon

50th (median)

82

45

40

χ2 = 7.3

P1 = 0.025*

75th

96

76

60

P =

P2 = 0.015*

    

0.025*

P3 = 0.59

  1. 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
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