Direct medical cost of oropharyngeal cancer among patients insured by Medicaid in Texas

Abstract

ObjectivesThe aim of this study was to estimate the direct 2-year mean incremental medical care costs for incident oropharyngeal cancer (OPC) from the perspective of the Texas Medicaid program. MethodsOPC patients treated from 2008 to 2012 were selected in the Texas Medicaid database. Using a two-step 1:1 propensity score matching method, we selected controls to determine the differential cost associated with OPC. Monthly and yearly direct costs were estimated for 2 years after the cancer diagnosis. For patients without 2-year complete follow-up, a generalized linear model with gamma distribution and log link function was applied to predict costs for the censored months. ResultsA total of 352 patients with OPC and the same number of controls were included in the study. Among OPC patients, 204 (58%) were covered by Medicaid and Medicare, and 148 patients (42%) were insured under Medicaid only. The adjusted first- and second-year mean differential costs were $45,102 and $11,684 for Medicaid-only enrollees and $5734 and $2162 for Medicaid-Medicare dual-eligible enrollees, respectively. Being male, Hispanic, Medicaid-only eligible, living in the Harlingen region, and having more comorbidities were positively associated with monthly cost. Lubbock residents experienced lower costs. ConclusionsThe direct incremental medical costs associated with OPCs among patients insured by Texas Medicaid were substantial in the first 2 years after cancer diagnosis and should be considered in assessing the economic consequences of increasing the investment in HPV vaccination in Texas.