The study population will be developed from the Optum Clinical database in the United States, representing routine clinical practice. Study population will comprise of participants hospitalized for an acute medical illness receiving enoxaparin during hospitalization. The first date of enoxaparin treatment will be the index date. The study period will be from February 2010 to September 2021. Participants will be followed for 90 days.
Venous Thromboembolism (VTE), including deep vein thrombosis (DVT) and pulmonary embolism (PE), is associated with an increase in risk of mortality and long-term disability and is a major contributor to global disease burden. Participants hospitalized with an acute medical illness are at increased risk of VTE.~This study a non-interventional study which analyzes data already collected in the Optum US clinical database. Its aim is to compare conventional versus extended duration prophylaxis with enoxaparin on the incidence of VTE and bleeding events in participants hospitalized for acute medical illness. The first date of enoxaparin treatment will be the index date.