. Author manuscript; available in PMC: 2016 Mar 3.

Published in final edited form as: Am J Gastroenterol. 2015 Mar 3;110(3):415–422. doi: 10.1038/ajg.2015.21

Table 1. Baseline demographics.

	Retroflexion (N=450)	Forward view (N=400)	P value
Age	59.9±8.3	59.0±8.3	0.94
Female gender	267	234	0.8
BMI	29.3±6.5	30.3±7	0.28
Indication			0.55
Screening	289	264
Surveillance	161	136
Colon cancer in first degree relative	71	64	0.93
History of diabetes mellitus	94	89	0.63
Current smoker	93	74	0.43
Endoscope used			0.19
Pediatric	410	347
Standard	40	26
Quality of bowel preparation			0.84
BBPS 6	100	93
BBPS 7	61	47
BBPS 8	87	74
BBPS 9	202	186
Sedation
Monitored anesthesia care^a	359	319	0.99
Conscious sedation^b	97	81
Prior abdominal surgery	107	82	0.25
Fellow involvement			0.35
Fellow present	111	110
No fellow	339	290

BBPS, Boston Bowel Preparation Scale score; BMI, body mass index.

Monitored anesthesia care: deep sedation provided by an anesthesiologist.

Conscious sedation: moderate procedural sedation administered by a nurse under the direction of the endoscopist.