Table 1
Demographic features, symptoms and findings of DISIDA scan

	Total patients (n=75)	BRI (+) (n=25)	BRI (-) (n=50)	P value
Age (yr), mean±SD (range)	44±16 (16∼79)	50.8	40.9	0.004
Age>60 yr (n=15)	20	40	10.0	0.005
BMI (kg/m2), mean±SD	22.3±3.5	23.3	21.8	0.089
BMI>25	23.5	32.0	20.0	0.251
Alcohol	36.0	36.0	36.0	1.000
Coffee	40.0	32.0	44.0	0.317
Smoking	16.0	12.0	18.0	0.75
Surgery
No operation	64.0	56.0	68.0	1.000
Cholecystectomy	6.7	16.0	2.0
Gastrectomy	2.7	8.0	0.0
Other abdominal surgery	26.7	20.0	30.0
Clinical symptoms
Bloating	56.0	48.0	60.0	0.324
Nausea	65.3	60.0	68.0	0.493
Epigastric pain	64.0	64.0	64.0	1.000
Acid regurgitation	57.3	52.0	60.0	0.509
Abdominal fullness	65.3	52.0	72.0	0.086
Vomiting	28.0	24.0	30.0	0.585
Cough	26.7	16.0	32.0	0.140
Weight loss	22.7	16.0	26.0	0.330
DISIDA scan (n=61)
GB function (contraction≥60%)	61.3 (n=46)	55.6 (n=10)	83.7 (n=36)	0.020
GB dysfunction (contraction<60%)	20.0 (n=15)	44.4 (n=8)	16.3 (n=7)

Values are presented as percentage. BRI, bile reflux index; BMI, body mass index; GB, gall bladder.