Comparison 1. Total number polyps (neoplastic and non‐neoplastic) detected.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Total polyps (neoplastic and non‐neoplastic) detected	7	2727	Mean Difference (IV, Fixed, 95% CI)	0.89 [0.74, 1.04]
1.1 Total polyps in studies with single intubation	5	2385	Mean Difference (IV, Fixed, 95% CI)	0.95 [0.77, 1.12]
1.2 Total polyps in studies with double intubation	2	342	Mean Difference (IV, Fixed, 95% CI)	0.73 [0.43, 1.03]
2 Total polyps (neoplastic and non‐neoplastic) in proximal colon	5	1521	Mean Difference (IV, Fixed, 95% CI)	0.34 [0.24, 0.44]
2.1 Total polyps in proximal colon in studies with single intubation	3	1179	Mean Difference (IV, Fixed, 95% CI)	0.31 [0.20, 0.43]
2.2 Total polyps in proximal colon in studies with double intubation	2	342	Mean Difference (IV, Fixed, 95% CI)	0.40 [0.22, 0.59]
3 Total polyps (neoplastic and non‐neoplastic) in distal colon	5	1521	Mean Difference (IV, Fixed, 95% CI)	0.51 [0.41, 0.60]
3.1 Total polyps in distal colon in studies with single intubation	3	1179	Mean Difference (IV, Fixed, 95% CI)	0.62 [0.50, 0.73]
3.2 Total polyps in distal colon in studies with double intubation	2	342	Mean Difference (IV, Fixed, 95% CI)	0.29 [0.13, 0.45]