Sequential therapy with combined trans-papillary endoscopic naso-pancreatic and endoscopic retrograde pancreatic drainage for pancreatic pseudocysts

Table 2 Comparison of relevant indices after treatment of pancreatic pseudocysts via endoscopic retrograde pancreatic drainage and the two-step procedure

Variable	Classification	Grouping by surgery		χ2 / t	P value
		ERPD	Two-step procedure
Complications	Infection	12	2	4.095	0.043
	None	80	58
Rate of reoperation	Reoperation method (puncture/open surgery)	7 (4/3)	0	4.786	0.029
	None	85	60
Recurrence rate	Recurrence	19	0	14.161	0.000
	None	73	60
Size of pancreatic pseudocyst (cm), mean ± SD	-	8.73 ± 3.71	13.25 ± 4.11	-4.483	0.000
Length of stay (d)	-	8.61 ± 3.07	12.15 ± 1.99	-19.157	0.000
Treatment cost (USD), mean ± SD	-	7875.05 ± 5221.5	7715.21 ± 3030.57	0.126	0.900

Two-step procedure: Endoscopic naso-pancreatic drainage combined with endoscopic retrograde pancreatic drainage sequential therapy. P < 0.05 was considered statistically significant. Data shown are the mean ± SD. ERPD: Endoscopic retrograde pancreatic drainage; ENPD: Endoscopic naso-pancreatic drainage; SD: Standard deviation.