Venous thromboembolism related hospitalizations among patients with genitourinary malignancy in the United States: A nationwide analysis.

Abstract

e16126 Background: Cancer Patients are at high risk of developing venous thromboembolism (VTE), pulmonary embolism (PE), and deep venous thrombosis (DVT). In this study, we aim to get an estimate of the incidence of VTE as a primary admission diagnosis among patients with genitourinary malignancies. Methods: We utilized ICD-9-CM and ICD-10-CM codes to identify patients with malignant neoplasms of the prostate, bladder, kidney, and testis who are older than 18 years and admitted with a primary diagnosis of DVT, PE within the NIS database during 2007-2016. Unadjusted incidence of DVT and PE was analyzed for each cancer site with the Rao-Scott chi-square test; multivariable logistic regression was employed to adjust for age, biological sex ( not for prostate/ testicular cancer), race, insurance, year of admission, and use of chemotherapy to further examine incidence. Results: We identified 3,339,985 admissions affiliated with genitourinary malignancies of whom 0.59% experienced DVT and 0.13% experienced PE with bladder cancer patients have the highest risk of hospitalization for VTE ( 79/1000). Within bladder cancer population; insurance ( p < 0.001) and hospital location and teaching status ( p < 0.001) were associated with DVT incidence; and biological sex ( p = 0.040) and race and ethnicity ( p = 0.026) with PE incidence. For all sites combined and after adjusting for all else, it was found that every year increase in age was associated with 1.2% increased odds of DVT or PE incidence (OR 95% CI: 1.01-1.02; p < 0.001). Further, rural vs. urban teaching hospitals had 41.2% increased odds (95% CI: 1.26-1.58; p < 0.001), and urban non teaching vs. urban teaching hospitals had 35.1% increased odds (95% CI: 1.26-1.45) of DVT or PE incidence. African Americans vs. whites had 46.8% increased odds of DVT or PE incidence (95% CI: 1.35-1.60; p < 0.001). Conclusions: Within the population of genitourinary malignancies who admitted with a primary diagnosis of VTE; the incidence was higher with older age, African Americans, uninsured population, in rural and urban non teaching facilities, bladder cancer population.