Figure 2: Average rate of patients meeting criteria for VTE prophylaxis, stratified on facility location and teaching status, based on ASH (Panel A), ACCP (Panel B), and RCOG (Panel C) criteria. Conclusion(s):There is substantial variation in the distribution of VTE risk factors among patients delivering at hospitals in the United States.This finding suggests caution is needed when developing quality metrics comparing percentage of patients receiving prophylaxis and need for risk adjustment when comparing hospital VTE rates.