. Author manuscript; available in PMC: 2016 Aug 29.

Published in final edited form as: Dis Colon Rectum. 2010 Jul;53(7):987–994. doi: 10.1007/DCR.0b013e3181dcb3f2

Table VII. Studies of Backwash Ileitis and Outcome after Ileal Pouch-Anal Anastomosis.

Author (ref)	Year	Study Design	N	BWI (%)	Diagnostic Criteria For		Outcome (BWI+ versus BWI-neg)
Author (ref)	Year	Study Design	N	BWI (%)	BWI	Pouchitis	Outcome (BWI+ versus BWI-neg)
Gustavsson (9)	1987	R	131	11	Radiographic, acute and chronic inflammation	Clinical	No difference
Schmidt (6)	1998	R	67	NR	Acute and chronic inflammation	Histologic	Increased risk of pouchitis
Abdelrazeq (7)	2005	P	100	22	Acute inflammation	Clinical, endoscopic, histologic	Increased risk of pouchitis
Haskell (10)	2005	R	200	17	Regenerative changes without inflammation; Acute and chronic inflammation	NR	No difference
Fleshner (11)	2007	P	200	17	Acute inflammation	Clinical, endoscopic	No difference
Ferrante (8)	2008	R	173	6	NR	Clinical, endoscopic	Increased risk of chronic pouchitis
Current study	-	P	334	12	Acute inflammation	Clinical, endoscopic	No difference