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Table 7 Correlation between acoustic parameters and SSI3 in the stuttering group

From: Acoustic characteristics of voice and speech in Arabic-speaking stuttering children

Items Correlation with SSI3
r P
1-Prolonged /a/vowel Fundamental Frequency (F0) −0.18 a 0.27
Jitter 0.43 b 0.006*
Shimmer 0.47 b 0.002*
Harmonic to Noise ratio (H/N ratio) −0.23 a 0.15
2-Automatic speech Fundamental Frequency (F0) −0.19 a 0.24
Jitter 0.05 a 0.77
Shimmer 0.31 a 0.06
Harmonic to Noise ratio (H/N ratio) −0.13 a 0.44
3-Spontaneous speech Fundamental Frequency (F0) −0.23 a 0.16
Jitter −0.19 a 0.25
Shimmer 0.13 b 0.43
Harmonic to Noise ratio (H/N ratio) −0.10 a 0.52
  1. aPearson correlation
  2. bSpearman’s correlation
  3. r, correlation coefficient
  4. *Significant p ≤ 0.05