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Reproducibility of Automated Voice Range Profiles, a Systematic Literature Review
Trine Printz1, Tine Rosenberg1, Christian Godballe1
1Department of ORL Head & Neck Surgery, Odense University Hospital and Institute of Clinical Research, University of Southern Denmark, Odense C, Denmark.
Objective:
Reliable voice range profiles are of great importance when measuring effects and side effects from surgery affecting voice capacity. Automated recording systems are increasingly used, but the reproducibility of results is uncertain. Our objective was to identify and review the existing literature on test-retest accuracy of the automated voice range profile assessment.
Study Design:
Systematic review.
Data Sources:
PubMed, Scopus, Cochrane Library, ComDisDome, Embase, and CINAHL (EBSCO).
Methods:
We conducted a systematic literature search of six databases from 1983 to 2016. The following keywords were used: phonetogram, voice range profile, and acoustic voice analysis. Inclusion criteria were automated recording procedure, healthy voices, and no intervention between test and retest. Test-retest values concerning fundamental frequency and voice intensity were reviewed.
Results:
Of 483 abstracts, 231 full-text articles were read, resulting in six articles included in the final results. The studies found high reliability, but data are few and heterogeneous.
Conclusion:
The reviewed articles generally reported high reliability of the voice range profile, and thus clinical usefulness, but uncertainty remains because of low sample sizes and different procedures for selecting, collecting, and analyzing data. More data are needed, and clinical conclusions must be drawn with caution.
