Nitrous oxide for analgesia in colonoscopy without sedation

Results from the American Society for Gastrointestinal Endoscopy/U.S. Food and Drug Administration collaborative study on complication rates and drug use during gastrointestinal endoscopy

Janet B. Arrowsmith, B. Burt Gerstman, David E. Fleischer et al. · Gastrointestinal Endoscopy · 1991 · 498 citations

Medicine, Clinical Sciences, Gastroenterology +8

Multiplicity in randomised trials II: subgroup and interim analyses

Kenneth F. Schulz, David A. Grimes · The Lancet · 2005 · 365 citations

Public Health, Biostatistics, Experimental Design +10

Conscious Sedation, Clinically Relevant Complications and Monitoring of Endoscopy: Results of a Nationwide Survey in Switzerland

Florian Froehlich, J. J. Gonvers, Michael Fried · Endoscopy · 1994 · 172 citations

Medicine, Clinical Sciences, Gastroenterology +15

NORCCAP (Norwegian colorectal cancer prevention): a randomised trial to assess the safety and efficacy of carbon dioxide versus air insufflation in colonoscopy

Michael Bretthauer · Gut · 2002 · 170 citations · Full text

Medicine, Clinical Sciences, Cancer Prevention +10

Prospective Evaluation of Factors Predicting Difficulty and Pain During Sedation-Free Colonoscopy

Yuuichi Takahashi, Hideaki Tanaka, Mitsuyo Kinjo et al. · Diseases of the Colon & Rectum · 2005 · 128 citations

Medicine, Gynecology, Surgery +15