When and why a colonoscopist should discontinue colonoscopy by himself?

Table 5 Factors related to insertion time (> 10 min) in left hemicolon and right hemicolon

	Left hemicolon			Right hemicolon
	OR	95%CI	P value	OR	95%CI	P value
Preoperative variable
Sex (female vs male)	1.30	0.86-1.96	0.22	1.47	0.96-2.26	0.08
Age (> 60 yr vs ≤ 60 yr)	1.18	0.78-1.79	0.43	1.35	0.88-2.06	0.17
Anesthesia (yes vs no)	0.68	0.44-1.03	0.07	0.84	0.54-1.30	0.43
Type of colonoscope (yes vs no)	0.68	0.45-1.04	0.08	0.61	0.39-0.94	0.02
Intraoperative variable
Fixation (yes vs no)	0.99	0.55-1.79	0.98	1.92	1.04-3.52	0.04
Tortuosity (yes vs no)	1.80	1.14-2.86	0.01	2.40	1.51-3.82	< 0.001
Laxity (yes vs no)	1.62	0.92-2.85	0.10	1.53	0.87-2.70	0.14
Redundancy (yes vs no)	2.44	1.09-5.44	0.03	4.65	2.30-9.39	< 0.001