Table 1 Comparison in the vocal parameters of IVFP patients with various disease courses.

From: The impact of synkinesis on voice restoration in idiopathic vocal fold paralysis patients with different disease courses

Parameter

Course of disease (months)

t

P

Cohen´s d

 < 3 (n = 85)

3–6 (n = 45)

MD

95% CI

MPT (s)

5.55 ± 4.29

8.34 ± 7.35

− 2.80

− 5.58, − 0.02

− 2.008

0.049

− 0.522

DSI

− 2.95 ± 7.49

0.19 ± 3.10

− 3.14

− 6.89, 0.61

− 1.673

0.099

− 0.457

F0max (Hz)

331.71 ± 135.82

370.20 ± 124.18

− 38.49

− 117.10, 40.13

− 0.979

0.332

− 0.289

F0min (Hz)

118.54 ± 47.50

126.29 ± 34.72

− 7.75

− 32.82, 17.31

− 0.618

0.539

− 0.174

SPLmax [dB (A)]

87.88 ± 9.82

94.53 ± 14.72

− 6.65

− 12,98, − 0.33

− 2.101

0.040

− 0.591

SPLmin [dB (A)]

56.21 ± 5.80

54.00 ± 4.12

2.21

− 0.85, 5.28

1.442

0.154

0.408

VHI score

51.71 ± 28.72

47.88 ± 29.04

3.83

− 12.78, 20.45

0.461

0.646

0.133

  1. CI, confidence interval; DSI, dysphonia severity index; F0max, the highest fundamental frequency; F0min, the lowest fundamental frequency; IVFP, idiopathic vocal fold paralysis; MD, mean difference; MPT, the maximum pronunciation time; SPLmax, the maximum sound pressure level; SPLmin, the minimum sound pressure level; VHI, voice handicap index.
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