Does a standard mental health questionnaire work for measuring distress in people with tinnitus?

What is it about?

Tinnitus, the persistent perception of ringing, buzzing or other sounds without an external source, is closely associated with emotional distress including anxiety, depression and reduced quality of life. Measuring that distress accurately and consistently is essential for both clinical care and research. The Clinical Outcomes in Routine Evaluation Outcome Measure (CORE-OM) is a well-established 34-item questionnaire used widely in mental health settings to assess emotional distress, but its original four-factor structure has not held up well across different populations in previous studies. This study tested ten competing factor structures of the CORE-OM using confirmatory factor analysis in a large sample of 342 people who self-rated their experience of tinnitus on a five-point scale from "not a problem" to "a very big problem." The analysis identified the best-fitting structure for this population and examined how levels of emotional distress varied across different severities of tinnitus experience, providing evidence on the measure's suitability as an outcome tool in tinnitus research and clinical settings.

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Why is it important?

Selecting appropriate, validated outcome measures is a fundamental requirement for tinnitus research, yet the CORE-OM had never previously been validated specifically in a tinnitus population despite being widely used in clinical contexts where tinnitus patients seek psychological support. Using a measure whose factor structure has not been confirmed in the target population risks producing unreliable and uninterpretable results in both treatment trials and routine clinical evaluation. This study provides the evidence base needed to support or caution against the use of the CORE-OM with this patient group, contributing to the broader effort to standardise and improve outcome measurement in tinnitus research. It sits within a programme of work on tinnitus outcome measurement that helped establish evidence for appropriate tools in clinical trials and audiology practice.