Fig. 4From: Venous thromboembolism risk assessment of surgical patients in Southwest China using real-world data: establishment and evaluation of an improved venous thromboembolism risk modelVTE incidence rate and number of patients in different risk stratums on prospective test dataset. Notes: The number in brackets, e.g. ‘358’ in “low (358)” in left sub-graph, represent number of patients who are classified into the stratumBack to article page