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Stroboscopic Parameters Reported as Voice Outcome Measures in Patients Treated for Laryngeal Cancer: A Systematic
Kendrea L Focht1, Bonnie Martin-Harris2, Heather Shaw Bonilha1
1Department of Health Sciences and Research, Medical University of South Carolina, Charleston, SC.
Background:
A systematic review of the use of stroboscopy as a treatment outcome measure of vocal fold function in patients treated for laryngeal cancer is presented.
Methods:
Computerized literature searches were performed. Eligible articles were admitted when stroboscopy was used to measure vocal fold function before and after treatment in patients with laryngeal cancer. Data extracted included: tumor stage and location, treatment modality, stroboscopy parameters, parameter scale, number of raters, rater reliability, methodology, and level of evidence.
Results:
Of 520 articles retrieved, 11 studies met inclusion criteria. A total of twenty-four parameters were reported. Rating scales and rater reliability varied.
Discussion:
Major methodological differences exist in studies using stroboscopic findings as voice outcome measures in patients' post-cancer treatment. These differences lead to equivocal findings when assessing the utility of stroboscopy as an outcome measure. Standardized, reliable scoring and reporting systems for laryngeal stroboscopic examinations are needed.
