Reliability and validity of the Chinese pediatric voice handicap index

Objectives: To evaluate the reliability and validity of the Chinese version of pediatric voice handicap index (pVHI). Material and methods: The original English version-pVHI was translated into Chinese. Parents of 52 children with voice dysphonia and 43 children with no history or symptoms of voice problems were asked to fill the Chinese pVHI questionnaires twice with an interval of 2 weeks. GRB (Grade, Roughness, Breathiness) scale was used for perceptual assessment by two otolaryngologists and one speech pathologist for each child's voice. The internal consistency was assessed using Cronbach's alpha coefficient. Pearson's correlation coefficient was used to evaluate the test-retest reliability. The Kendall's coefficient of concordance W was used to assess the consistency of GRB scores of 3 voice specialists. The nonparametric Mann-Whitney test was used to assess the differences between the dysphonia group and controls. The correlation between pVHI and GRB scores were assessed using Pearson's correlation coefficient. Results: The internal consistency of total score and three subscales scores of Chinese pVHI were 0.788-0.944. The test-retest reliability was 0.631-0.887(P <.001). The pVHI scores of control group significantly were lower than the pathological group (P =.000). The GRB scores of 3 voice specialists have an excellent consistency (W = 0.694-0.807, P =.000). The pVHI scores positively correlated with GRB assessment (P <.01). Conclusions: The Chinese version of pVHI had a good reliability and validity. It can be applicable and useful supplementary tool for evaluating parents' perception of their children's dysphonia.