Predictors for difficult cecal insertion in colonoscopy: The impact of obesity indices

Table 4 Predictive parameters of prolonged cecal insertion time according to gender by multivariable logistic regression analysis when body mass index and visceral adipose tissue volume were considered simultaneously or separately

		OR	95%CI	P value	OR	95%CI	P value	OR	95%CI	P value
Male	BMI (kg/m2)
	< 23	1.58	1.00-2.50	0.049	1.69	1.10-2.60	0.017
	23-24.9	Ref			Ref
	≥ 25	1.82	1.22-2.71	0.003	1.88	1.28-2.75	0.001
	VAT volume (cm3)
	< 500	1.40	0.80-2.43	0.236				1.41	0.86-2.33	0.178
	500-1499	Ref						Ref
	≥ 1500	1.24	0.81-1.90	0.323				1.42	0.96-2.12	0.082
	Experience
	Attending physicians	Ref			Ref			Ref
	Fellow	1.93	1.41-2.63	< 0.001	1.92	1.41-2.63	< 0.001	1.88	1.38-2.57	< 0.001
Female	BMI (kg/m2)
	< 23	1.66	1.02-2.69	0.041	1.96	1.25-3.10	0.004
	23-24.9	Ref			Ref
	≥ 25	1.79	1.02-3.13	0.042	1.71	0.99-2.96	0.053
	VAT volume (cm3)
	< 500	1.54	1.03-2.31	0.034				1.66	1.17-2.35	0.005
	500-1499	Ref						Ref
	≥ 1500	1.31	0.47-3.64	0.606				1.47	0.55-3.96	0.446
	Experience
	Attending physicians	Ref			Ref			Ref
	Fellow	1.53	1.08-2.16	0.016	1.52	1.08-2.14	0.016	1.54	1.10-2.17	0.013

BMI: Body mass index; VAT: Visceral adipose tissue.