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Epidemiology of Venous Thromboembolism

This study has been completed.
Information provided by (Responsible Party):
Robert James Glynn, PhD, Brigham and Women's Hospital Identifier:
First received: July 8, 2002
Last updated: August 5, 2015
Last verified: August 2015
To evaluate potentially modifiable lifestyle predictors of venous thromboembolism and their joint associations with biochemical and genetic determinants.

Cardiovascular Diseases Thromboembolism Peripheral Vascular Diseases

Study Type: Observational

Further study details as provided by Robert James Glynn, PhD, Brigham and Women's Hospital:

Study Start Date: July 2002
Study Completion Date: June 2006
Primary Completion Date: June 2006 (Final data collection date for primary outcome measure)
Physicians' Health Study I
Physicians' Health Study II
Women's Health Study
Women's Antioxidant Cardiovascular Health Study

Detailed Description:


Venous thromboembolism is a common condition with considerable morbidity and mortality. The disorder has diverse causes including trauma, stasis, drugs, cancer, and genetic factors that contribute to enhanced clotting and coagulation. The study uses existing large-scale population studies to unravel factors responsible for and contributing to venous thromboembolism.


The study design is a prospective cohort study of 77,118 persons based on pooling information from four large randomized trials of US health professionals that have collected detailed risk factor information and have used common strategies to prospectively identify and validate cases of venous thromboembolism (VTE). These trials are: Physicians' Health Studies I & II including 29,071 US male physicians, of whom 22,071 have been followed since the initiation of the first trial in 1982; the Women's Health Study including 39,876 female health professionals who will have an average of 10 years of follow-up; and the Women's Antioxidant Cardiovascular Study including 8,171 female health professionals with prevalent cardiovascular disease or at high risk of cardiovascular disease who will have an average of 8 years of follow-up. Archived blood samples were collected from approximately 75 percent of participants at baseline and will be used to assess biochemical and genetic markers of risk including factor V Leiden, the G20210A mutation in the prothrombin gene, hyperhomocysteinemia, and anticardiolipin antibodies. The study will assess the joint association with risk of these markers and potentially modifiable factors including body mass index, hormone replacement therapy, physical activity, and aspirin use. The study population will include over 1,000 incident cases of VTE, including 750 with blood samples.


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
No human subjects are involved. Collected data are used.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00041457

Sponsors and Collaborators
Brigham and Women's Hospital
OverallOfficial: Robert Glynn Brigham and Women's Hospital
  More Information

Responsible Party: Robert James Glynn, PhD, Biostatistician; Professor of Medicine, Brigham and Women's Hospital Identifier: NCT00041457     History of Changes
Other Study ID Numbers: 1183
Study First Received: July 8, 2002
Last Updated: August 5, 2015

Additional relevant MeSH terms:
Cardiovascular Diseases
Venous Thromboembolism
Vascular Diseases
Peripheral Vascular Diseases
Peripheral Arterial Disease
Embolism and Thrombosis
Arterial Occlusive Diseases processed this record on September 21, 2017