Venous Thromboembolism (VTE) Incidence and VTE-Associated Survival among Olmsted County Residents of Local Nursing Homes

Tanya M. Petterson; Carin Y. Smith; Jane A. Emerson; Kent R. Bailey; Aneel A. Ashrani; John A. Heit; Cynthia L. Leibson

doi:10.1055/s-0038-1660436

Thrombosis and Haemostasis, Table of Contents

Thromb Haemost 2018; 118(07): 1316-1328
DOI: 10.1055/s-0038-1660436

Stroke, Systemic or Venous Thromboembolism

Georg Thieme Verlag KG Stuttgart · New York

Venous Thromboembolism (VTE) Incidence and VTE-Associated Survival among Olmsted County Residents of Local Nursing Homes

Tanya M. Petterson

¹Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

,

Carin Y. Smith

¹Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

,

Jane A. Emerson

²Division of Epidemiology, Department of Health Sciences Research, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

,

Kent R. Bailey

¹Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

,

Aneel A. Ashrani

³Division of Hematology, Department of Internal Medicine, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

,

John A. Heit

²Division of Epidemiology, Department of Health Sciences Research, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

³Division of Hematology, Department of Internal Medicine, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

⁴Department of Cardiovascular Diseases, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

,

Cynthia L. Leibson

²Division of Epidemiology, Department of Health Sciences Research, College of Medicine, Mayo Clinic, Rochester, Minnesota, United States

› Author Affiliations

Abstract

Nursing home (NH) residency is an independent risk factor for venous thromboembolism (VTE), but the VTE burden within the NH population is uncertain. This study estimates VTE incidence and VTE-associated mortality among NH residents. We identified all NH residents in any NH in Olmsted County, Minnesota, United States, 1 October 1998 to 31 December 2005 and all first lifetime VTE among county residents to estimate VTE incidence while resident of local NHs (NHVTE), using Centers for Medicare and Medicaid Services Minimum Data Set and Rochester Epidemiology Project resources. We tested associations between NHVTE and age, sex and time since each NH admission using Poisson modelling. Additionally, we tested incident NHVTE as a potential predictor of survival using Cox proportional hazards, adjusting for age, sex and NH residency. Between 1 October 1998 and 31 December 2005, 3,465 Olmsted County residents with ≥1 admission to a local NH, contributed 4,762 NH stays. Of the 3,465 NH residents, 111 experienced incident NHVTE (2.3% of all eligible stays), for an overall rate of 3,653/100,000 NH person-years (NH-PY). VTE incidence was inversely associated with time since each NH admission, and was highest in the first 7 days after each NH admission (18,764/100,000 NH-PY). The adjusted hazard of death for incident NHVTE was 1.90 (95% confidence interval [CI]: 1.38–2.62). In conclusion, VTE incidence among NH residents was nearly 30-fold higher than published incidence rates for the general Olmsted County population. VTE incidence was highest within 7 days after NH admission, and NHVTE was associated with significantly reduced survival. These data can inform future research and construction of clinical trials regarding short-term prophylaxis.

Keywords

epidemiology - venous thromboembolism - nursing home - incidence - survival

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References

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