Journal
ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY
Volume 34, Issue 11, Pages 2478-2485Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1161/ATVBAHA.114.304085
Keywords
metabolic syndrome X; obesity; pulmonary embolism; venous thromboembolism; venous thrombosis
Categories
Funding
- National Heart, Lung, and Blood Institute (NHLBI) [HHSN268201100005C, HHSN268201100006C, HHSN268201100007C, HHSN268201100008C, HHSN2682011 00009C, HHSN268201100010C, HHSN268201100011C, HHSN268201100012C]
- Longitudinal Investigation of Thromboembolism Etiology - NHLBI [HL59367]
- NHLBI [HL080295]
- National Institute on Aging [AG023629]
- [HHSN268201200036C]
- [HHSN268200800007C]
- [N01 HC55222]
- [N01HC85079]
- [N01HC85080]
- [N01HC85081]
- [N01HC85082]
- [N01HC85083]
- [N01HC85086]
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Objective The metabolic syndrome (MetS) may contribute to the pathogenesis of venous thromboembolism (VTE), but this association requires additional investigation. Approach and Results We performed a patient-level meta-analysis of case-control and cohort studies that evaluated the role of MetS and risk of unprovoked VTE. For case-control studies, odds ratios and 95% confidence intervals were calculated using logistic regression analysis to estimate the influence of individual variables on the risk of VTE; (2) tests for trend were used to investigate the effect of increasing number of components of MetS on the risk of VTE and to explore the influence of abdominal obesity on this relationship. For cohort studies, hazard ratios and 95% confidence interval were calculated using multivariable Cox regression analysis. Six case-control studies were included (908 cases with unprovoked VTE and 1794 controls): in multivariate analysis, MetS was independently associated with VTE (odds ratio, 1.91; 95% confidence interval, 1.57-2.33), and both MetS and abdominal obesity were better predictors of unprovoked VTE than obesity defined by the body mass index. Two prospective cohort studies were included (26531 subjects and 289 unprovoked VTE events): age, obesity, and abdominal obesity, but not MetS were associated with VTE. Conclusions Case-control but not prospective cohort studies support an association between MetS and VTE. Abdominal adiposity is a strong risk factor for VTE.
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