Table 8 Association between acoustic parameters and Bloodstien (BLD) grade in the stuttering group
From: Acoustic characteristics of voice and speech in Arabic-speaking stuttering children
Items | Grade I n= 4 | Grade II n= 16 | Grade III n= 16 | Grade IV n= 4 | Test of significance | |
|---|---|---|---|---|---|---|
I- Prolonged /a / vowel | F0 | 295.5 ± 26.1 | 274.0 ± 35.7 | 267.9 ± 43.8 | 258.9 ± 25.4 | F= 0.75 P= 0.53 |
Jitter | 0.39 (0.23–0.55) | 0.64 (0.25–2.4) | 0.41 (0.3–2.0) | 0.58 (0.24–0.89) | KW= 4.4 P= 0.22 | |
Shimmer | 5.3 (2.8–6.4) | 5.3 (2.0–12.1) | 4.8 (1.3–11.8) | 7.2 (2.0–11.7) | KW= 0.56 P= 0.91 | |
H/N ratio | 18.9 ± 2.0 | 16.7 ± 4.1 | 18.4 ± 4.6 | 16.4 ± 3.1 | F= 0.70 P= 0.56 | |
II- Automatic speech | F0 | 282.7 ± 26.1 | 257.7 ± 34.9 | 249.1 ± 44.4 | 251.8 ± 12.4 | F= 0.89 P= 0.46 |
Jitter | 1.7 ± 0.5 | 1.7 ± 0.5 | 1.5 ± 0.5 | 1.9 ± 0.6 | F= 0.63 P= 0.59 | |
Shimmer | 8.9 ± 2.5 | 8.6 ± 2.9 | 8.5 ± 2.5 | 9.2 ± 3.0 | F= 0.08 P= 0.97 | |
H/N ratio | 13.5 ± 2.6 | 13.2 ± 3.6 | 13.2 ± 2.5 | 12.4 ± 3.8 | F= 0.11 P= 0.96 | |
III- Spontaneous speech | F0 | 299.4 ± 19.8 | 279.7 ± 44.3 | 268.3 ± 55.3 | 273.0 ± 11.6 | F= 0.53 P= 0.67 |
Jitter | 1.8 ± 0.3 | 1.6 ± 0.4 | 1.7 ± 0.5 | 1.7 ± 0.4 | F= 0.13 P= 0.94 | |
Shimmer | 10.3 (6.7–14.8) | 7.3 (5.4–14.5) | 9.6 (4.7–13.8) | 4.4 (1.6–11.2) | KW= 3.5 P= 0.32 | |
H/N ratio | 13.6 ± 3.2 | 14.3 ± 3.2 | 13.4 ± 3.2 | 13.7 ± 2.3 | F= 0.23 P= 0.88 | |