Skip to main content

Table 5 Correlation analysis between the age and the numerical predictors in the study group

From: A study of voice quality in obese Egyptian children

Age with: Spearman’s correlation coefficient
Rho* p value** Interpretation
Fundamental frequency Controls − 0.47 0.0092 Significant inverse correlation
Cases − 0.24 0.1958 Insignificant correlation
Whole sample − 0.39 0.0021 Significant inverse correlation
Mean fundamental frequency Controls − 0.46 0.0105 Significant inverse correlation
Cases − 0.18 0.3438 Insignificant correlation
Whole sample − 0.34 0.007 Significant inverse correlation
Jitter Controls 0.46a 0.0112a Significant direct correlation
Cases 0.4 0.0292 Significant direct correlation
Whole sample 0.32 0.0128 Significant direct correlation
Shimmer Controls − 0.04 0.8335 Insignificant correlation
Cases 0.19a 0.3089a Insignificant correlation
Whole sample 0.12 0.3777 Insignificant correlation
Noise to harmonic ratio Controls 0.33 0.0749 Insignificant correlation
Cases − 0.23 0.2148 Insignificant correlation
Whole sample − 0.01 0.9201 Insignificant correlation
  1. *Significance level at p value ≤ 0.05
  2. aResults of Pearson’s correlation coefficient