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Table 3 The results of logistic and liner regression analyses in routine primary TKA

From: Tourniquet use in routine primary total knee arthroplasty is associated with a higher transfusion rate and longer postoperative length of stay: a real-world study

Variables Transfusion rate PLOS
RR (95%CI) P value B (95%CI) P value
Crude model 2.458 (1.962–3.081) 0.000 1.280 (1.066–1.494) 0.000
Model 1 2.604 (2.075–3.267) 0.000 1.294 (1.080–1.508) 0.000
Model 2 2.319 (1.841–2.922) 0.000 1.278 (1.061–1.495) 0.000
Model 3 1.888 (1.449–2.461) 0.000 0.923 (0.690–1.156) 0.000
  1. PLOS postoperative length of stay
  2. Model 1: controlled for age, gender, body mass index and diagnoses
  3. Model 2: controlled for model 1 + hypertension, type 2 diabetes, chronic obstructive pulmonary disease, coronary heart disease, preoperative analgesic use, hemoglobin and albumin
  4. Model 3: controlled for model 2 + method of anesthesia, American Standards Association class, operative time, intraoperative bleeding, tranexamic acid and drain use