An abbreviated Caprini model for VTE risk assessment in trauma.

The Caprini risk assessment model (RAM) is widely used to assess risk of venous thromboembolism (VTE). However, it is cumbersome with 31 variables and poses challenges with inter-rater reliability. This study aimed to determine if an abbreviated model could perform similarly in VTE risk assessment. We performed a retrospective review of trauma patients ≥ 18 years old and admitted for over 24 h at a Level I trauma center from January 1, 2018, to December 31, 2018. Demographic and clinical data were analyzed to generate Caprini scores. Using a p-value cutoff of   2 h, transfusion, restricted mobility > 72 h, central venous catheter, current major surgery, age, history of VTE, hip or leg fracture, and serious trauma). Compared to the original, the abbreviated model had a similar odds ratio (1.17 vs 1.07, both p-values < 0.001), c-statistic (0.747 vs 0.753), sensitivity (0.73 vs 0.76) and specificity (0.62 vs 0.61). An abbreviated Caprini RAM performs similarly to the original, may streamline workflow and allow for automation in electronic health records, potentially enhancing its use in resource limited settings.