Does rurality influence treatment decisions in early stage laryngeal cancer?

PURPOSE The mortality rate of laryngeal cancer has been trending downward with the use of more effective surgical, radiation, and systemic therapies. Although the best treatment for this disease is not entirely clear, there is a growing consensus on the value of primary radiotherapy as an organ preservation strategy. This study examines urban-rural differences in the use of radiotherapy as the primary treatment for early stage laryngeal cancer in Pennsylvania. EXPERIMENTAL DESIGN The sample was drawn from the Pennsylvania tumor registry, which lists 2,437 laryngeal cancer patients diagnosed from 2001 to 2005. We selected 1,705 adults with early stage squamous cell carcinoma of the larynx for our analysis. Demographic data and tumor characteristics were included as control variables in multivariate analyses. Rurality was assigned by ZIP code of patient residence. RESULTS Controlling for demographic and clinical factors, rural patients were less likely than urban patients to receive radiotherapy as the primary treatment modality for early stage larynx cancer (OR 0.740, 95% CI 0.577-0.949, P = .0087). No other associations between rural status and treatment choice were statistically significant. CONCLUSIONS Relatively fewer rural patients with larynx cancer are treated primarily with radiation therapy. Further investigations to describe this interaction more thoroughly, and to see if this observation is found in larger population data sets, are warranted.