Improving polyp detection at colonoscopy: Non-technological techniques

Table 5 Summary of studies evaluating proximal colon retroflexion

Ref.	Year	n	Design
Harrison et al[44]	2004	100	RCT
Hewett et al[46]	2011	1000	Prospective
Chandran et al[45]	2015	1351	Prospective
Kushnir et al[49]	2015	850	RCT
Lee et al[50]	2017	1020	Prospective
Núñez Rodríguez et al[51]	2020	692	RCT
Rath et al[52]	2020	205	RCT
Michopoulos et al[53]	2021	655	Prospective

RCT: Randomized controlled trial.