Short-term and long-term test-retest reliability of the Nasality Severity Index 2.0

摘要: Abstract Purpose The Nasality Severity Index 2.0 (NSI 2.0) forms a new, multiparametric approach in the assessment of hypernasality. To enable clinical implementation this index, short- and long-term test-retest reliability index was explored. Methods In 40 normal-speaking adults (mean age 32y, SD 11, 18–56y) 29 children 8y, 2, 4–12y), acoustic parameters included NSI (i.e. nasalance vowel /u/ an oral text, voice low tone to high ratio (VLHR) /i/) were obtained twice at same test moment during second two weeks later. After determination 2.0, comprehensive set statistical measures applied determine its reliability. Results Long-term variability slightly higher compared short-term variability, both children. Overall, difference 2.82 for 2.68 between results consecutive measurements can be interpreted as genuine change. With ICC 0.84 0.77 children, additionally shows excellent relative consistency. No statistically significant withheld Conclusion Reliable performed. Consequently, practice, which successive scores reliably interpreted. Learning outcomes reader will able describe discuss new hypernasality, parameters. Based on information, scores, e.g. before after surgery or speech therapy,