Using Innovative Acoustic Analysis to Predict the Postoperative Outcomes of Unilateral Vocal Fold Paralysis

Table 3

The results of success and failure groups before and after operation.

	Overall ()		Success group ()		Failure group ()
	Pre	Post	Pre	Post	Pre	Post
GRBAS	2.02 (0.51)	1.60 (0.72)	2.02 (0.41)	1.02 (0.29)^+	2.02 (0.62)	2.23 (0.45)
MPT	5.04 (1.91)	16.06 (8.27)	5.36 (1.92)	15.72 (8.14)^+	4.67 (1.95)	16.45 (8.96)^+
Voice a
Jitter	4.57 (4.09)	1.59 (1.30)^+	3.42 (2.45)	0.81 (0.42)^+	5.87 (5.27)	2.48 (1.41)
Shimmer	0.85 (0.76)	0.59 (0.37)	0.56 (0.31)	0.34 (0.17)	1.18 (1.01)	0.88 (0.34)
NHR	0.21 (0,15)	0.17 (0.11)	0.16 (0.08)	0.12 (0.03)	0.26 (0.19)	0.23 (0.14)
NIrrP	40.59 (13.60)	34.70 (20.51)	37.82 (14.77)	35.17 (19.29)	43.71 (12.35)	34.16 (13.15)
Voice i
Jitter	4.12 (3.04)	1.96 (1.74)^+	2.86 (1.82)	0.68 (0.32)^+	5.53 (3.61)	3.41 (1.52)
Shimmer	0.85 (0.76)	0.70 (0.47)	0.56 (0.30)	0.43 (0.31)	1.18 (1.01)	1.02 (0.44)
NHR	0.16 (0.13)	0.21 (0.13)	0.12 (0.05)	0.14 (0.01)	0.21 (0.17)	0.30 (0.14)
NIrrP	43.16 (11.91)	32.32 (16.23)^+	31.48 (7.62)	31.34 (15.62)	51.30 (8.03)	33.43 (17.91)

, success versus failure group; , preoperation versus postoperation.
GRBAS, grade, roughness, breathiness, asthenia, and strain scale; MPT, maximum phonation time; NHR, noise to harmonic ratios.