Search date	Topic and/or database	Search terms used
March 6, 2006	MEDLINE	Colonoscopy, adverse events, standards
March 15, 2006	EMBASE	Colonoscopy, practice guidelines, randomized controlled trial
June 8, 2006	Assessment MEDLINE only	Colonoscopy, risk assessment, needs assessment, process assessment (health care)
June 8, 2006	Bleeding MEDLINE only	Colonoscopy, adverse events, bleeding, hemorrhage
June 8, 2006	Bowel preparation MEDLINE only	Colonoscopy, bowel preparation
June 8, 2006	Sedation MEDLINE only	Colonoscopy, propofol, hypnotics and sedatives, conscious sedation, midazolam
July 14, 2006	Cancer miss rates MEDLINE only	Colonoscopy, cancer miss rates, missed cancer rates