Evidence map›Paper›PMID 34362112›Full record

ArticleJournal of clinical medicine2021

Validation and Classification of the 9-Item Voice Handicap Index (VHI-9i).

Felix Caffier, Tadeus Nawka, Konrad Neumann, Matthias Seipelt, Philipp P Caffier

Abstract read
In one paragraph

Article in Journal of clinical medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Assessing the effects of botulinum toxin therapy for spasmodic dysphonia: An Austria-Germany registry.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Article
  6. Incidence and nature of functional voice disorders.The South African journal of communication disorders = Die Suid-Afrikaanse tydskrif vir Kommunikasieafwykings · 2025
    Article
  7. Review
  8. Treatment Effects of Combined Transoral Injection Laryngoplasty with Short Voice Therapy in Patients with Unilateral Vocal Fold Immobility: A Pilot Study.Folia phoniatrica et logopaedica : official organ of the International Association of Logopedics and Phoniatrics (IALP) · 2025
    Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Felix CaffierDepartment of Audiology and Phoniatrics, Charité-Universitätsmedizin Berlin, Charitéplatz 1, D-10117 Berlin, Germany.
Tadeus NawkaDepartment of Audiology and Phoniatrics, Charité-Universitätsmedizin Berlin, Charitéplatz 1, D-10117 Berlin, Germany.
Konrad NeumannInstitute of Biometry and Clinical Epidemiology, Charité-Universitätsmedizin Berlin, Campus Charité Mitte, Charitéplatz 1, D-10117 Berlin, Germany.ORCID 0000-0001-9482-0971
Matthias SeipeltDepartment of Otorhinolaryngology, Ernst von Bergmann Klinikum Potsdam, Charlottenstr. 72, D-14467 Potsdam, Germany.
Philipp P CaffierDepartment of Audiology and Phoniatrics, Charité-Universitätsmedizin Berlin, Charitéplatz 1, D-10117 Berlin, Germany.ORCID 0000-0001-8492-9586

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The international nine-item Voice Handicap Index (VHI-9i) is a clinically established short-scale version of the original VHI, quantifying the patients' self-assessed vocal handicap. However, the current vocal impairment classification is based on percentiles. The main goals of this study were to establish test-retest reliability and a sound statistical basis for VHI-9i severity levels. Between 2009 and 2021, 17,660 consecutive cases were documented. A total of 416 test-retest pairs and 3661 unique cases with complete multidimensional voice diagnostics were statistically analyzed. Classification candidates were the overall self-assessed vocal impairment (VHIs) on a four-point Likert scale, the dysphonia severity index (DSI), the vocal extent measure (VEM), and the auditory-perceptual evaluation (GRB scale). The test-retest correlation of VHI-9i total scores was very high (r = 0.919,

Indexed as

dysphonia severity categorieshoarsenessinternational short scaleself-assessed vocal impairment (VHIs)test–retest reliabilityvalidation of classification rangesVHI-9i severity levelsvoice diagnosticsVoice Handicap Index (VHI-9i)

Identifiers

PMID34362112
PMCPMC8347778

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.