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Direct medical costs attributable to venous thromboembolism among persons hospitalized for major operation: a population-based longitudinal study

Published: January 26, 2015
Category: Papers
Authors: Ashrani AA, Bailey KR, Cohoon KP, Heit JA, Leibson CL, Long KH, Park MS, Petterson TM, Ransom JE
Country: United States
Language: null
Type: Finance/Budgeting
Setting: Hospital

Surgery 157:423-451.

Mayo Clinic, Rochester, MN, USA; K Long Health Economics Consulting LLC, St. Paul, MN, USA

BACKGROUND: We estimated medical costs attributable to venous thromboembolism (VTE) among patients currently or recently hospitalized for major operation.

METHODS: Using Rochester Epidemiology Project resources, we identified all Olmsted County, MN, residents with objectively diagnosed incident VTE within 92 days of hospitalization for major operation during an 18-year period, 1988-2005 (n = 355). One Olmsted County resident hospitalized for major operation without VTE was matched to each case on event date (±1 year), type of operation, duration of previous medical history, and active cancer status. Subjects were followed in Rochester Epidemiology Project provider-linked billing data for standardized, inflation-adjusted direct medical costs from 1 year before index (case’s VTE event date and control’s matched date) to earliest of death, emigration, or December 31, 2011. We used generalized linear modeling to predict costs for cases and controls and used bootstrapping methods to assess uncertainty and significance of mean adjusted cost differences.

RESULTS: Adjusted mean predicted costs were more than 1.5-fold greater for cases ($55,956) than for controls ($32,718) (P ≤ .001) from index to up to 5 years postindex. Cost differences between cases and controls were greatest within the first 3 months after index (mean difference = $12,381). Costs were greater for cases than controls (mean difference = $10,797) from 3 months to up to 5 years postindex and together accounted for about half of the overall cost difference.

CONCLUSION: VTE during or after recent hospitalization for major operation contributes a substantial economic burden; VTE-attributable costs are greatest in the initial 3 months but persist for up to 5 years.

PMID: 25633736
PMCID: PMC4346535

United States,Cost Burden Evaluation,Financial,Outcome Measures,Adolescent,Adult,Aged,80 and over,Child,Preschool,Gender,Hospitalization,Infant,Longitudinal Studies,Middle Aged,Surgical Procedures,Operative

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