Inclusion Criteria:  age 18 and over, and scheduled for surgery (outpatient or full hospitalization) in one of the following specialties: orthopedics, digestive (including bariatric surgery), gynecological, thoracic, vascular, and having read and understood the briefing note and not showing up for research.  Exclusion Criteria:  operated on urgently, or operated on for an intervention other than orthopedics, gynecology, digestive surgery, vascular surgery, or having received a toilet in bed, or having expressed their opposition to the research.