Methods:
This is a retrospective study including patients undergoing small-bowel capsule endoscopy between January 2014 and August 2020. Patients with prolonged gastric transit time were consecutively included and patients without prolonged gastric transit time were randomized (controls) in a 1:2 ratio. Prolonged gastric transit time was defined as small-bowel capsule endoscopy remaining in the stomach for more than 1 hour, as checked with the routine use of the real-time viewer, requiring an intervention such as prokinetic administration and/or endoscopically assisted capsule delivery into the duodenum.