Impact of looping on premalignant polyp detection during colonoscopy

Table 3 Multivariate analysis of the effect on polyp detections

	Odds ratio	95% confidence interval	DOF	P value
Adenoma
Looping1	1.13	1.06-1.20	1	< 0.001
Age	1.05	1.04-1.05	1	< 0.001
Male sex	1.39	1.28-1.50	1	< 0.001
Insertion time	0.94	0.92-0.96	1	< 0.001
Withdrawal time	1.14	1.13-1.15	1	< 0.001
Endoscopist experience	1.68	1.53-1.85	1	< 0.001
High-risk adenoma
Looping1	1.25	1.13-1.38	1	< 0.001
Age	1.05	1.05-1.06	1	< 0.001
Male sex	1.527	1.33-1.74	1	< 0.001
Insertion time	0.90	0.87-0.93	1	< 0.001
Withdrawal time	1.20	1.18-1.21	1	< 0.001
Endoscopist experience	3.91	3.17-4.82	1	< 0.001
Clinically significant serrated polyp
Looping1	1.14	1.04-1.26	1	0.007
Age	1.00	0.99-1.01	1	0.999
Male sex	0.60	0.52-0.68	1	< 0.001
Insertion time	0.92	0.88-0.95	1	< 0.001
Withdrawal time	1.16	1.14-1.17	1	< 0.001
Endoscopist experience	2.04	1.71-2.43	1	< 0.001

¹No, mild, and severe looping were scored 0, 1, and 2, respectively.

P value was calculated using binomial logistic regression model. DOF: Degree of freedom.