Annual Total Medical Expenditures Associated with Hypertension by Diabetes Status in U.S. Adults

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INTRODUCTION: Hypertension and diabetes, both independent risk factors for cardiovascular disease, often coexist. The hypertension-increased medical expenditures by diabetes status is unclear, however. This study estimated annual total medical expenditures in U.S. adults by hypertension and diabetes status. METHODS: The study population consisted of 40,746 civilian, non-institutionalized adults aged ≥18 years who participated in the 2013 or 2014 Medical Expenditure Panel Survey. The authors separately estimated hypertension-increased medical expenditures using two-part econometric and generalized linear models for the total; diabetes (n=4,396); and non-diabetes (n=36,250) populations and adjusted the results into 2014 U.S. dollars. Data were analyzed in 2017 and estimated the hypertension-increased medical expenditures by type of medical service and payment source. RESULTS: The prevalence of hypertension was 34.9%, 78.3%, and 30.1% for the total, diabetes, and non-diabetes populations, respectively. The respective mean unadjusted annual per capita medical expenditures were $5,225, $12,715, and $4,390. After controlling for potential confounders, hypertension-increased expenditures were $2,565, $4,434, and $2,276 for total, diabetes, and non-diabetes populations, respectively (all p<0.001). The hypertension-increased expenditure was highest for inpatient stays among the diabetes population ($1,730, p<0.001), and highest for medication among the non-diabetes population ($687, p<0.001). By payment source, Medicare ranked first in hypertension-increased expenditures for the diabetes ($2,753) and second for the non-diabetes ($669) populations (both p<0.001). CONCLUSIONS: Hypertension-increased medical expenditures were substantial and varied by medical service type and payment sources. These findings may be useful as inputs for cost- effectiveness evaluations of hypertension interventions by diabetes status.

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