Laryngoscopic findings of age-related vocal fold atrophy are reliable but not specific.

OBJECTIVES

We aimed to evaluate the reliability of laryngoscopic features of vocal fold atrophy as assessed by novice otolaryngology trainees and expert laryngologists.

DESIGN

Two expert fellowship-trained laryngologists and three non-expert otolaryngology resident trainees were recruited to view 50 anonymised laryngo-stroboscopic examinations of patients presenting with dysphonia and non-voice, laryngeal complaints. Reviewers were asked to stratify the patient's age, provide an opinion about the presence of age-related vocal fold atrophy and specify which laryngoscopy features were present to make the diagnosis.

SETTING

Tertiary care laryngology practice.

PARTICIPANTS

Two fellowship-trained laryngologists and three trainee otolaryngologists.

MAIN OUTCOME MEASURES

Accuracy of age categorisation was determined and Kappa analysis was performed to assess inter-rater agreement.

RESULTS

The mean age of patients was 54.9 years old with near equal male to female distribution. The overall accuracy of age category determination by raters was only 30.8%. Kappa analysis demonstrated fair agreement regarding the presence of vocal fold atrophy in non-expert reviewers, and moderate agreement amongst expert reviewers. Features of glottic gap, muscular atrophy of vocal folds and prominent vocal processes were all identified with high agreement (>80.0%).

CONCLUSION

Our study illustrates that while raters can agree on the presence of age-related vocal fold atrophy, the findings may be non-specific and do not necessarily correlate with age.