Evaluating screening age for colonoscopy: a quality assurance assessment.

Objective: To evaluate colonoscopies in patients aged 40 to 49 and 50 to 59 years from multiple endoscopy surgery centers serving a wide geographical area.

Methods: An observational prospective multicenter quality assurance review was conducted in 49 Ambulatory Surgery Centers in 17 states with 315 gastroenterologists. Care of patients and routine of gastroenterologists continued as standard practice with patients attending for purposes of screening, surveillance, and symptoms.

Withdrawal times and associated factors in colonoscopy: a quality assurance multicenter assessment.

Objective: To evaluate the use and impact of the recommended withdrawal time of at least 6 minutes from the cecum in colonoscopy in multiple gastroenterology endoscopy ambulatory surgery centers serving a wide geographical area.

Methods: An observational prospective multicenter quality assurance review was conducted in 49 ambulatory surgery centers in 17 states with 315 gastroenterologists. There was no intervention with this quality assessment program as care of patients and the routine of gastroenterologists continued as standard practice.