Establishment of predictive models and determinants of preoperative gastric retention in endoscopic retrograde cholangiopancreatography

Table 2 Univariate analysis of factors influencing preoperative gastric retention in endoscopic retrograde cholangiopancreatography patients

General information		The gastric retention group (n = 52)	Non-gastric retention group (n = 100)	t/χ2	P value
Age (years)		60.55 ± 10.16	60.50 ± 10.45	0.028	0.978
Gender	Male	17	75	25.631	< 0.001
	Female	35	25
BMI (kg/m2)		21.39 ± 2.22	21.35 ± 2.14	0.108	0.914
Primary disease	Malignant biliary and pancreatic tumors	39	38	18.741	< 0.001
	Other biliary diseases	13	62
Hypertension	Yes	15	20	1.510	0.470
	No	37	80
Diabetes	Yes	8	22	0.945	0.623
	No	44	78
Jaundice	Yes	32	30	14.090	0.001
	No	20	70
Opioid use	Yes	28	27	10.680	0.005
	No	24	73
Gastrointestinal obstruction	Yes	27	31	6.347	0.042
	No	25	69

BMI: Body mass index.