Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
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Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Τρίτη 20 Δεκεμβρίου 2022

The maximum phonation time as marker for voice treatment efficacy: a network meta‐analysis

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ABSTRACT

Purpose

There is a diversity in treatment approaches for voice therapy in which aerodynamic treatment effects between the approaches are lacking. The evidence of voice treatments on the maximum phonation time (MPT) was quantified using the statistical approach of a network meta-analysis (NMA).

Data sources

Three databases and manual search from inception to November 2021 were evaluated.

Study selection

Studies were considered which were reports of randomized controlled/clinical trials (RCT) evaluating the efficacy of a specific voice therapy treatment using MPT as an outcome measure in adult participants with voice disorders. Studies were excluded if participants had been diagnosed with neurological-motor-speech disorders or who were vocally healthy. Furthermore, no medical, pharmacological, or technical instrumental treatments were used.

Data Extraction and Synthesis

Preferred Reporting Items for Systematic Reviews and Meta-analyses Extension Statement guidelines were followed. Two reviewers independently screened citations, extracted data and assessed risk of bias using PEDro scale. Random effects model was used for meta-analysis.

Results

We identified finally 12 RCT studies (treatment groups n=285, and control group without an intervention n=62). Eight interventions were evaluated. The only effective intervention with a significant effect was Vocal Function Exercises (VFE) (mean pre-post difference 6.16 sec, 95% confidence interval, 1.18 sec to 11.13 sec).

Conclusions and Relevance

VFE effectively improved MPT from pre- to post-treatment in comparison with other voice interventions which were identified in the present NMA. Further high-quality intervention studies with large samples sizes, multidimensional measures, and homogeneous groups of dysphonia are needed to support evidence-based practice in laryngology.

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