• Evan M Graboyes, Elizabeth Garrett-Mayer, Anand K Sharma, Eric J Lentsch, and Terry A Day.
• Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina.
• Cancer. 2017 Jul 15; 123 (14): 2651-2660.

BackgroundAdherence to evidence-based treatment guidelines has been proposed as a measure of cancer care quality. The objective of this study was to determine the rate and predictors of care that does not adhere to National Comprehensive Cancer Network guidelines regarding commencing postoperative radiation therapy (PORT) within 6 weeks of surgery for patients with head and neck squamous cell carcinoma (HNSCC).MethodsThe National Cancer Data Base was reviewed from 2006 to 2014, and patients with HNSCC who underwent curative-intent surgery followed by PORT were identified. Multivariable logistic regression analysis was used to determine the factors associated with nonadherence to guidelines regarding the timing of initiating PORT.ResultsIn total, 47,273 patients were included in the study. 55.7% of patients (26,340/47,273) failed to commence PORT within 6 week of surgery. The percentage of patients who failed to initiate PORT within 6 week of surgery increased over time. On multivariable analysis, the factors associated with failure to initiate timely, guideline-adherent PORT included black race, public insurance [Medicare, Medicaid] or uninsured status, lower levels of education, increased severity of comorbidity, increased postoperative length of stay, 30-day unplanned hospital readmission, treatment at an academic medical center, and the receipt of surgery and PORT at different facilities.ConclusionsOver 50% of patients with HNSCC who undergo surgery and PORT receive care that does not adhere to National Comprehensive Cancer Network guidelines with regard to initiating PORT within 6 weeks of surgery. Sociodemographic, oncologic, treatment, and hospital factors are all associated with failure to receive guideline-directed care and should be explored in future studies. Cancer 2017;123:2651-60. © 2017 American Cancer Society.© 2017 American Cancer Society.

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