A Systematic Review of Voice-Related Patient-Reported Outcome Measures for Use with Adults

Methodological quality of 100 recent systematic reviews of health-related outcome measurement instruments: an overview of reviews

PURPOSE

Systematic reviews evaluating and comparing the measurement properties of outcome measurement instruments (OMIs) play an important role in OMI selection. Earlier overviews of review quality (2007, 2014) evidenced substantial concerns with regards to alignment to scientific standards. This overview aimed to investigate whether the quality of recent systematic reviews of OMIs lives up to the current scientific standards.

METHODS

One hundred systematic reviews of OMIs published from June 1, 2021 onwards were randomly selected through a systematic literature search performed on March 17, 2022 in MEDLINE and EMBASE. The quality of systematic reviews was appraised by two independent reviewers. An updated data extraction form was informed by the earlier studies, and results were compared to these earlier studies' findings.

RESULTS

A quarter of the reviews had an unclear research question or aim, and in 22% of the reviews the search strategy did not match the aim. Half of the reviews had an incomprehensive search strategy, because relevant search terms were not included. In 63% of the reviews (compared to 41% in 2014 and 30% in 2007) a risk of bias assessment was conducted. In 73% of the reviews (some) measurement properties were evaluated (58% in 2014 and 55% in 2007). In 60% of the reviews the data were (partly) synthesized (42% in 2014 and 7% in 2007); evaluation of measurement properties and data syntheses was not conducted separately for subscales in the majority. Certainty assessments of the quality of the total body of evidence were conducted in only 33% of reviews (not assessed in 2014 and 2007). The majority (58%) did not make any recommendations on which OMI (not) to use.

CONCLUSION

Despite clear improvements in risk of bias assessments, measurement property evaluation and data synthesis, specifying the research question, conducting the search strategy and performing a certainty assessment remain poor. To ensure that systematic reviews of OMIs meet current scientific standards, more consistent conduct and reporting of systematic reviews of OMIs is needed.

First-Person Perspectives of Gender-Affirming Voice Feminization Training: A Mixed Methods Approach

OBJECTIVES

Despite evidence for the validity of using client-led outcome measures in gender-affirming voice training (GAVT), the existing body of research on voice feminization relies heavily on acoustic-perceptual measures without additional qualitative exploration of client experience. Additionally, the authors are not aware of any existing studies prompting client input on the voice feminization methods they find most helpful in achieving their voice goals. The current study focuses on crucial client perceptions of GAVT for voice feminization and identifies the methods clients find most helpful.

METHODS

Using a mixed-methods approach, we gathered numeric and qualitative survey data from 21 individuals who engaged in GAVT supporting voice feminization. We conducted follow-up interviews with five survey participants to gather additional qualitative data on client experiences and perceptions of GAVT.

RESULTS

Quantitative and qualitative data reveal that clients are satisfied with GAVT supporting voice feminization, perceive their clinicians as being culturally inclusive, and identify oral/forward resonance work as one of the most helpful voice training methods. Interestingly, however, frequency of work on oral/forward resonance during training did not predict voice satisfaction post-training.

CONCLUSIONS

Clients identified oral/forward resonance as one of the most helpful methods of voice feminization and found their GAVT experiences to be supportive of their voice goals. These findings emphasize the importance and value of client-led outcome measures when investigating effective approaches to GAVT.

Behind the Headset: Predictive Accuracy of Patient-Reported Outcome Measures for Voice Symptoms in Call Centers

Objective

This study examines factors predicting self-reported voice symptoms in call center workers.

Methods

Multivariate analysis and predictive modeling assess personal, work-related, acoustic, and behavioral factors. Generalized Linear Models (GLMs) and Receiver Operating Characteristic (ROC) curves are employed.

Results

Age and sleep patterns impacted voice quality and effort, while workplace factors influenced symptom perception. Unhealthy vocal behaviors related to tense voice and increased effort, while hydration was protective. Voice acoustics showed diagnostic potential, supported by ROC data. These findings emphasize voice symptom complexity in call center professionals, necessitating comprehensive assessment.

Limitations

This study recognizes its limitations, including a moderate-sized convenience sample and reliance on PROM metrics. Future research should incorporate more objective measures in addition to self-reports and acoustic analysis.

Value

This research provides novel insights into the interplay of personal, occupational, and voice-related factors in developing voice symptoms among call center workers. Predictive modeling enhances risk assessment and understanding of individual susceptibility to voice disorders.

Conclusion

Results show associations between various factors and self-reported voice symptoms. Protective factors include sleeping more than six hours and consistent hydration, whereas risk factors include working conditions, such as location and behaviors like smoking. Diagnostic models indicate good accuracy for some voice symptom PROMs, emphasizing the need for comprehensive models considering work factors, vocal behaviors, and acoustic parameters to understand voice issues complexity.

Reliability and validity of the Turkish voice handicap index-partner (VHI-P-TR)

OBJECTIVE

This study examines the Turkish validity, reliability and diagnostic performance of the Voice Handicap Index-Partner (VHI-P-TR), which is used to obtain the perceptions of communication partners of individuals with dysphonia about the functional, physical and emotional handicap resulting from the patient experiencing dysphonia.

METHOD

The study included 160 individuals with dysphonia and their communication partners. First, translation, back translation, expert validity and pilot study were performed in the scale adaptation process. Then, a confirmatory factor analysis (CFA) was conducted to assess the construct validity of the VHI-P-TR. Correlations between the VHI-P-TR and Voice Handicap Index (VHI-TR) scores of dysphonic individuals were examined to evaluate the concurrent validity of the VHI-P-TR. To assess the reliability of the VHI-P-TR, a test-retest analysis was performed, and internal consistency coefficients (α) were calculated. A receiver operating characteristic (ROC) analysis was conducted to determine the cut-off point for the VHI-P scores.

RESULTS

A high positive correlation was found between the participants' VHI-P-TR and VHI-TR total and subscales mean scores (r's > 0.782; p < 0.01). The VHI-P-TR had high internal consistency regarding for its subscales and total score (α's > 0.94; p < 0.01). Factor loadings of all VHI-P-TR items were higher than 0.30 and their error variances were lower than 0.90. In addition, factor loadings were statistically significant for all the items (p < 0.05). The data fit the model well according to all CFA indices except for GFI (scale = 0.69). An adequate sensitivity and specificity were achieved for the VHI-P-TR, and the cut-off point was found as 11.50 for the total score and ranged from 2.50 to 5.50 for the subscales.

CONCLUSION

The VHI-P-TR is a valid and reliable measurement tool with high diagnostic performance in all subscales and total score, and has high levels of agreement with the VHI-TR.

Validity and Reliability of the Dutch Children's Voice Handicap Index-10

OBJECTIVES

Voice-related quality of life (Qol) questionnaires provide the clinician with information regarding the impact of voice disorders on the patient's well-being. The available voice-related QoL tools for Dutch-speaking children are parent-proxy in nature. However, the use of proxy measurements has been debated in the literature. The Children's Voice Handicap Index-10 (CVHI-10) is a self-reported QoL tool for dysphonic children. Therefore, the aim of this study is to develop and validate a Dutch version of the CVHI-10.

STUDY DESIGN

Observational, prospective, cross-sectional study.

METHODS

The original version of the CVHI-10 was translated and adapted to Dutch according to the recommendations of the Quality of Life Special Interest Group - Translation and Cultural Adaptation group. Subsequently, the questionnaire was individually completed by 77 children (dysphonic group: n = 30, control group: n = 47) between eight and 14 years. In order to investigate test-retest reliability, 50% of the participants were asked to complete the questionnaire twice with an interval of 2 weeks. Internal consistency, test-retest reliability and construct validity were calculated. A receiver operating characteristic (ROC) analysis was conducted to check the sensitivity and specificity levels of the instrument.

RESULTS

Internal consistency measured with Cronbach's alpha coefficient was 0.745. Test-retest reliability measured with intraclass correlation coefficients was 0.718. Mean total CVHI-10 score was 6.17 ± 2.7 in the dysphonic group and 2.68 ± 2.6 in the control group. The difference in total score between the groups was statistically significant (P < 0.001), suggesting that the tool has good construct validity. ROC analysis demonstrated moderate diagnostic accuracy (area under the curve = 0.869) and suggested a cut-off score of 3.5.

CONCLUSIONS

The Dutch CVHI-10 is the first self-reported voice-related QoL tool for dysphonic Dutch-speaking children. It is a valid, reliable and sensitive tool to assess the impact of a voice disorder on the child's well-being.