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Table 3 The variable assignment of multivariate logistic regression

From: Risk factors of deep vein thrombosis of lower extremity in patients undergone gynecological laparoscopic surgery: what should we care

Factors Variables Assignment
VTE Y Yes = 1, no = 2
Age X1  ≥ 50 = 1, < 50 = 2
Hypertension X2 Yes = 1, No = 2
D-dimer X3  ≥ 0.5 = 1, < 0.5 = 2
Duration of surgery X4  ≥ 60 = 1, < 60 = 2
Intraoperative pneumoperitoneum pressure X5  ≥ 15 = 1, < 15 = 2
Duration of days in bed X6  ≥ 3 = 1, < 3 = 2