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Table 3 Coefficient of correlation (coefficient and p-value) between voice subjective assessment (blinded GRBASI) and acoustic parameters

From: Impact of laryngopharyngeal reflux on subjective and objective voice assessments: a prospective study

  G p-value R p-value B p-value A p-value S p-value I p-value
Jitt 0.463 0.002 0.184 0.249 0.548 <0.001 0.505 0.001 0.295 0.061 0.430 0.005
RAP 0.454 0.003 0.190 0.234 0.530 <0.001 0.498 0.001 0.276 0.081 0.419 0.007
Shim 0.500 0.001 0.130 0.416 0.522 <0.001 0.397 0.010 0.417 0.007 0.365 0.019
APQ 0.494 0.001 0.159 0.320 0.463 0.002 0.405 0.009 0.438 0.004 0.401 0.009
  1. The statistical analysis was provided using Pearson's correlation test; Grade (G), Roughness (R), Breathiness (B), Asthenia (A), Strain (S), Instability (I), Jitter percent (Jitt), Relative Average Perturbation (RAP), Shimmer percent (Shim), and Amplitude Perturbation Quotient (APQ)