Baseline and Surgical Characteristics of Patients
RS, postoperative bleeding, OSAS, obstructive sleep apnea syndrome, Roux-en-Y gastric bypass, gastroesophageal reflux disease
POSTOPERATIVE BLEEDING, PERIOPERATIVE COMPLICATION, COMPLICATIONS
Abbreviations: ASA, American Society of Anesthesiology Physical Status Classification System; BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); GERD, gastroesophageal reflux disease; OSAS, obstructive sleep apnea syndrome; RS, revisional surgery; RYGB, Roux-en-Y gastric bypass; SG, sleeve gastrectomy.Data are presented as number (percentage) of patients unless otherwise indicated.The mITT population consisted of 257 patients. Of these, 129 patients (50.0%) were in the short prophylaxis group and 128 patients (50.0%) were in the long prophylaxis group. Because of a missing CUS, 12 patients had to be excluded from the mITT population.A total of 300 patients consented to study participation. Twenty-eight (9.3%) were excluded before randomization for several reasons, including cancellation of surgery, screening failure, patient withdrawal, or withdrawal because of perioperative complications that precluded the timely start of study medication. In total, 272 patients (90.7%) were randomized. Of these, 3 patients (1.1%) were excluded from the safety analysis because of immediate postoperative bleeding complications (these patients had no exposition to rivaroxaban).