Cross-cultural adaptation of the Iranian Voice Quality of Life Profile into Brazilian Portuguese.
Joyra da Silva Carrer, Fabiana Zambon, Ali Dehqan and 2 others
PMID 38836821WHAT IT FOUND
The Iranian voice quality-of-life questionnaire was adapted into Brazilian Portuguese.
Thirty-six adults at risk for dysphonia understood all 43 items, and no item needed change. It is not yet validated, so it should not be used as a validated measure.
Key findings
01The final Brazilian Portuguese version, IVQLP-Br, kept 43 items and a four-level response scale.
02During adaptation, consensus was achieved on 33 items, and the expert committee revised 15 items.
03In pre-testing, 36 adults at risk for dysphonia answered the adapted questionnaire, and the proportion of 'not applicable' responses was significantly lower than the proportion of standard scale responses for every item.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The pre-test included 36 adults, recruited online through social media and institutional email, so the sample may not represent people seen in voice clinics. Participants were selected as at risk for dysphonia by a Vocal Handicap Index-10 score of 8 or more, not as a clinically diagnosed dysphonia group, so the findings do not show how the questionnaire works in a diagnosed voice-disorder clinic population. The study excluded people with neurological or cognitive impairments that could affect item comprehension, so it does not address whether the questionnaire is usable for those patients. Four of 36 participants did not report vocal complaints, so some responses may reflect risk rather than experienced voice difficulty. The study tested only understanding and applicability. It did not validate reliability, validity, interpretability, or diagnostic accuracy of IVQLP-Br.
Declared interests
The authors declared no financial support.
The easy way to misread this
Do not read IVQLP-Br as a validated clinical outcome measure. The paper reports cross-cultural adaptation and pre-testing only, and it says further research is needed to demonstrate validity, reliability, and diagnostic accuracy.