Comparison of Outcome Measures (Subjective, Objective, and Patient-Based) in Laryngeal Dystonia Treatment With Botulinum Toxin A Injection

Correlation between outcome measures instruments used for patients with adductor laryngeal dystonia requires further attention. Weak correlations with an anchor based GRCQ were found for this study's selected outcome instruments. A select number of correlations were found between outcome instruments within each of the individual outcome measure domains (patient perception, clinical perception, objective acoustics), but there was largely a lack of correlation found for instruments between these three separate domains.