Magnetic resonance cholangiopancreatography for the detection of pancreatic duct stones in patients with chronic pancreatitis

Table 1 Correlation between each factor and PDS

Index	Odds ratio (95% CI)	P
Sex	2.47 (1.19, 5.01)	< 0.05
Age	0.54 (0.13, 1.69)	0.95
Drinking history	2.81 (1.25, 6.04)	0.54
Intermittent abdominal pain	6.42 (3.09, 13.72)	< 0.01
Aggravated emaciation	10.62 (4.92, 26.24)	< 0.01
Steatorrhea	1.31 (0.58, 2.78)	0.65
Cholelithiasis	3.54 (1.72, 6.29)	< 0.01
Gastrointestinal symptoms	5.20 (2.63, 12.44)	< 0.01
Fever	0.67 (0.20, 1.98)	< 0.96
Jaundice	9.84 (4.31, 23.47)	< 0.01
DM/IGT	11.24 (6.58, 25.63)	< 0.01
Serum and urine amylase	1.26 (0.53, 2.42)	0.72
Result of B-mode ultrasound	13.64 (6.36, 28.63)	< 0.01

Table 2 Correlation between 4 indexes and PDS

Index	Odds ratio (95% CI)	Wald	P
Intermittent abdominal pain	3.83 (1.37, 8.06)	20.23	< 0.05
Gastrointestinal symptoms	4.78 (2.26, 10.14)	23.18	< 0.05
DM/IGT	4.34 (1.85, 8.47)	24.56	< 0.01
The result of B-mode ultrasound examination	12.64 (5.72, 22.39)	29.81	< 0.01

Table 3 Incidence of PDS (%)

Positive indexes(gastrointestinal symptoms, DM/IGT, intermittent abdominal pain)	B-mode ultrasound
	Negative	Positive
1	5-7	38-41
2	19-23	76-82
3	54	95

Table 4 Relation between the prediction model and the final diagnosis

Incidence of PDS in the prediction model (%)	n	Final diagnosis
		Non-stones	Stones	PDS incidence (%)
< 5	34	34	0	0
5-7	26	24	2	7
19-23	5	4	1	20
38-54	2	1	1	50
76-95	11	0	11	100