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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Preoperative anemia and deep vein thrombosis in patients with perioperative bone trauma: a cohort study

Fig. 1

Research flow chart. Inclusion criteria: (1) Traumatic fractures; (2) Age > 18 years; (3) Definitely diagnosis of femur and pelvic and surgical treatment; (4) Complete medical records. Exclusion criteria: (1) complicated by hematologic diseases or coagulation dysfunction; (2) long term history of taking anticoagulant drugs; (3) pregnancy; (4) patients with severe diseases of important organs such as liver, kidney, heart, and brain that cannot tolerate surgery; (5) vascular surgery; (6) previous deep vein thrombosis. Preoperative anemia was taken as the dependent variable, DVT-related variable as the covariable, and 0.02 as the caliper value. Matching was conducted in a ratio of 1:1. DVT means deep vein thrombosis

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