Nasobiliary drainage after endoscopic papillary balloon dilatation may prevent postoperative pancreatitis

Table 3 Outcomes of the subgroup patients

Variable		EPBD (n = 77)			EST (n = 73)			Neither EPBD nor EST (n = 68)
		G1a (n = 41)	G2a (n = 36)	P value	G1b (n = 34)	G2b (n = 39)	P value	G1c (n = 38)	G2c (n = 30)	P value
Time to normalization (d)	TB	4.3 ± 0.9	4.1 ± 1.2	0.4133	3.9 ± 1.0	4.2 ± 1.2	0.2441	4.0 ± 1.1	4.3 ± 0.9	0.2269
	ALT	4.8 ± 0.9	5.1 ± 1.2	0.2197	5.5 ± 0.9	5.9 ± 1.1	0.0876	4.7 ± 1.0	4.8 ± 1.1	0.6985
	CRP	4.3 ± 0.9	4.8 ± 1.1	0.0834	3.9 ± 0.9	4.1 ± 1.1	0.3931	3.3 ± 1.0	3.7 ± 0.9	0.0832
PHD (d)		6.5 ± 1.1	7.0 ± 1.4	0.0844	5.6 ± 1.1	5.7 ± 1.3	0.7219	4.1 ± 1.3	4.5 ± 1.4	0.2274
ERCP-related complications	PEP	0	6 (16.7)	0.0217	2 (5.9)	3 (7.7)	0.8736	5 (13.2)	2 (6.7)	0.6364
	Hyperamylasemia	4 (9.8)	11 (30.6)	0.0215	5 (14.7)	6 (15.4)	0.8048	8 (21.1)	2 (6.7)	0.1874
	PEC	1 (2.4)	3 (8.3)	0.5168	1 (2.9)	2 (5.1)	0.9033	3 (7.9)	3 (10)	0.8992
	PEB	2 (4.8)	0	0.5321	2 (5.9)	1 (2.6)	0.4762	0	2 (6.7)	0.3720
OPC		7 (17.1)	18 (50.0)	0.0046	9 (26.5)	10 (25.6)	0.9358	14 (50.0)	7 (23.3)	0.3509

Data are expressed as absolute n (%) or mean ± SD. EPBD: Endoscopic papillary balloon dilatation; EST: Endoscopic sphincterotomy; TB: Total serum bilirubin; ALT: Alanine aminotransferase; CRP: C-reactive protein; PHD: Postoperative hospitalization duration; PEP: Post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis; PEC: Post-ERCP cholangitis; PEB: Post-ERCP bleeding; OPC: Overall patient complications.