Table 4.

The Risk Factors of recurrent hepaticojejunostomy anastomotic stricture after endoscopic balloon dilatation

				Recurence		Univariate analysis			Multivariate analysis
			All	(+)	(−)	HR	95% CI	P value	HR	95% CI	P value
Patient’s factors	Sex	male	25	11	14	2.08	(0.92–4.75)	0.076	2.00	(0.86–4.77)	0.108
		female	17	13	4
	Age (years)	≧65	30	18	12	0.65	(0.24–1.57)	0.356
		< 65	12	6	6
Preoperative factors	BMI	≧25	23	13	10	1.39	(0.61–3.13)	0.427
		< 25	19	11	8
	Diameter of common bile duct (mm)	≧7	27	12	15	1.81	(0.80–4.11)	0.150	1.62	(0.67–3.90)	0.276
		< 7	15	12	3
	CRP (mg/dl)	≧1.00	15	9	6	0.96	(0.42–2.29)	0.919
		< 1.00	27	15	12
Pre-endoscopic treatment factors	Intrahepatic bile duct stones	(+)	9	3	6	1.91	(0.65–8.12)	0.260
		(−)	33	21	12
	Cholangitis	(+)	24	14	10	1.23	(0.52–2.81)	0.623
		(−)	18	10	8
	Serum albumin level (normal ≧3.5 mg/dl)	≧3.5	13	6	7	1.06	(0.44–2.96)	0.896
		< 3.5	29	18	11
	Earlier stricture after operation (< 1 year)	(+)	20	15	5	2.32	(1.03–5.56)	0.043	1.72	(0.72–4.31)	0.226
		(−)	22	9	13
	Biliary anastomotic leakage after operation	(+)	1	1	0	9.74	(0.50–65.9)	0.107	13.2	(0.62–107)	0.084
		(−)	41	23	18
	Pancreatic fistulae after operation	(+)	20	10	10	0.74	(0.32–1.66)	0.469
		(−)	22	14	8
Factors during endoscopic treatment	Remaining balloon waste during inflation	(+)	4	3	1	0.49	(0.17–2.11)	0.301
		(−)	38	21	17
	Endoscopic biliary stone extraction	(+)	11	4	7	1.82	(0.68–6.30)	0.246
		(−)	31	20	11

HR hazard ratio, CI confidence interval, BMI body mass index, CRP C-reactive protein