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  • Title: Persistently High Rate of Venous Thromboembolic Disease in Inflammatory Bowel Disease: A Population-Based Study.
    Author: Bernstein CN, Nugent Z, Singh H.
    Journal: Am J Gastroenterol; 2021 Jul 01; 116(7):1476-1484. PubMed ID: 33767104.
    Abstract:
    INTRODUCTION: Venous thromboembolism (VTE) is known to be increased in inflammatory bowel disease (IBD). We aimed to determine whether rates of VTE in IBD have reduced over the past 30 years. METHODS: We used the population-based University of Manitoba IBD Epidemiology Database (1984-2018) to determine the incidence of VTE in IBD and the incidence rate ratio vs matched controls. In persons with IBD with and without VTE, we assessed for variables that were associated with an increased risk of VTE on multivariate logistic regression. RESULTS: The incidence of VTE in the IBD cohort was 7.6% which was significantly greater than in controls (3.3%, P < 0.0001). The overall age-standardized incidence rate of VTE was 433 per 100,000 in IBD and 184 per 100,000 in controls. The incidence of VTE was higher in Crohn's disease (8.4%) than in ulcerative colitis (6.9%, P = 0.0028). The incidence rate ratio in IBD vs controls was 2.36 (95% confidence interval 2.16-2.58). The increased risk was similar in males and females and in Crohn's disease compared with ulcerative colitis. The incidence rate among persons with IBD from 1985 to 2018 decreased very slowly, with annual percent change of -0.7% (P = 0.0003). Hospital admission, high comorbidity, use of antibodies to tumor necrosis factor for less than 3 years up until the time of the VTE, and the combination of steroid and antibodies to tumor necrosis factor increased the risk of VTE. DISCUSSION: Despite advancements in IBD management in the past 30 years, the rates of VTE have only been slowly decreasing and remain significantly increased compared with controls.
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