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Flow chart for inclusion and exclusion of patients. Variables indicated with an asterisk* were primarily extracted from the LROI database. When these data were missing, the data were extracted from the (electronic) medical record. Castor Electronic Data Capture is indicated by Castor. ASA, American Society of Anesthesiologists; BMI, body mass index; LROI, Dutch Arthroplasty Register; THP, total hip replacement; TKP, total knee replacement.
