Statistical analysis
All patients with an ICD-9 or ICD-10 codes for VTE, PE, or DVT were included in the analysis. The following demographic data were gathered for patients who met the inclusion criteria: age, sex, ethnicity, weight at enoxaparin initiation (if given, otherwise most recent weight, in kg), height (in cm), body mass index (BMI), serum creatinine at initiation of enoxaparin, and critical care status. The following anticoagulation data were gathered for patients meeting inclusion criteria: enoxaparin dose (mg/kg), anti-Xa levels, and number of enoxaparin dose changes. Data was analyzed using the statistical software, SPSS version 19.14 The primary outcome was analyzed using a multiple logistic regression and secondary outcomes were reported through descriptive statistics.