Comparative analysis of endoscopic precut conventional and needle knife sphincterotomy

Table 3 Logistic regression-Hyperamylasemia (> 80 U/L) 4 h after the procedure and its association with indication, Vater’s papilla anatomy and additional procedures

	Conventional (PCS)		Needle knife (PNK)
Parameter	P	OR	P	OR
Indications
Lithiasis	1.4	0.73	0.19	0.52
Distal stenosis	0.98	1.01	0.98	0.96
Middle stenosis	0.38	0.52	0.55	0.67
CBD diam. < 9 mm	0.96	0.97	0.9	1.06
Bilirubin level - N	0.43	1.72	0.42	1.8
Vater’s papilla anatomy
Flat	0.0271	3.38	0.22	0.56
Prominent	0.034	0.28	0.86	1.0
In diverticulum	0.52	0.62	0.93	1.05
Tumor	0.96	1.04	0.9	1.06
Additional procedures
CBD prosth. diam. < 6 Fr	0.13	5.3	0.56	0.7
Endoscopic haemostasis	0.82	1.2	0.049	5.42
Specimen sampling	0.84	0.78	0.92	1.06

¹Statistically significant only in unifactor logistic regression;

²Statistically significant only in multifactor logistic regression. CBD: Common bile duct; OR: Odds ratio; PCS: Pre-cut conventional sphincterotomy; PNK: Pre-cut needle knife.