Speech intelligibility benefits of frequency-lowering algorithms in adult hearing aid users: a systematic review and meta-analysis.

<italic>Objective</italic>: This systematic review evaluated the effectiveness of two frequency-lowering schemes, non-linear frequency compression and frequency transposition, at improving speech intelligibility for adult hearing-impaired populations. <italic>Design</italic>: A systematic search of...

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Publicado en:International Journal of Audiology Vol. 57; no. 4; pp. 249 - 262
Autores principales: Simpson, Andrea, Bond, Alicia, Loeliger, Michelle, Clarke, Sandy
Formato: meta analysis research systematic review tables/charts Journal Article
Publicado: Taylor & Francis Ltd Apr2018
Acceso en línea:Ver este registro en EBSCOhost
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      dt: Apr2018
      vid: 57
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      pub: Taylor & Francis Ltd
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        10.1080/14992027.2017.1375163
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        atl: Speech intelligibility benefits of frequency-lowering algorithms in adult hearing aid users: a systematic review and meta-analysis.
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        au:
          Simpson, Andrea
          Bond, Alicia
          Loeliger, Michelle
          Clarke, Sandy
        affil: School of Allied Health, La Trobe University, Melbourne, Australia
      sug:
        subj:
          Hearing Aids
          Algorithms Utilization
          Speech Intelligibility
          Quality Improvement
          Human
          Systematic Review
          Meta Analysis
          Descriptive Statistics
          Confidence Intervals
          Cochrane Library
          CINAHL Database
          Embase
          PubMed
          Medline
          Psycinfo
          P-Value
          Middle Age
          Female
          Male
          Adult
          Aged
          Middle Aged: 45-64 years
          Adult: 19-44 years
          Aged: 65+ years
          Female
          Male
      ab: <italic>Objective</italic>: This systematic review evaluated the effectiveness of two frequency-lowering schemes, non-linear frequency compression and frequency transposition, at improving speech intelligibility for adult hearing-impaired populations. <italic>Design</italic>: A systematic search of 10 electronic databases was carried out using pre-defined inclusion criteria. Accepted articles were then critically appraised using the Effective Public Health Practice Project (EPHPP) Critical Appraisal Tool. Outcome results were further synthesised where possible using random effects meta-analysis to provide overall combined estimates of the treatment differences along with 95% confidence intervals. <italic>Study sample</italic>: A total of 20 articles were accepted for final review. <italic>Results</italic>: Overall, study quality was of moderate strength. Meta-analysis found a statistically significant benefit in favour of frequency-lowering for consonant recognition testing in quiet across 145 participants with both algorithms providing comparable gains. Equivalent results were found between frequency-lowering and conventional processing on all other speech measures. <italic>Conclusions</italic>: Based on the available data, frequency-lowering does seem to provide some improvement in an individual’s speech intelligibility dependant on the stimulus type, although the benefits were modest. This improvement was not seen across all measures, however those who do not benefit from the technology will also not be harmed by trialling it.
      pubtype: Academic Journal
      doctype:
        meta analysis
        research
        systematic review
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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