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. 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 III. Serologic Expression in Patients With and Without Backwash Ileitis.

BWI + Patients* (n=38) BWI- Patients* (n=289) p value
pANCA
 Positive 30 (79) 190 (66) .14
 Median level 56 52 .07
 High-level (>100 EU/ml) 11 (29) 26 (9) 0.001
ASCA
 IgA+ 2 (5) 30 (10) .56
 IgG+ 1 (3) 17 (6) .71
 Either IgA+ or IgG+ 2 (5) 40 (14) .20
 Both IgA+ and IgG+ 1 (3) 7 (2) 1
 Median level IgA+ 35 34 .78
 Median level IgG+ 52 65 .44
anti-OmpC
 Positive 6 (16) 62 (21) .53
 Median level 29 34 .34
anti-CBir1
 Positive 8 (21) 53 (18) .66
 Median level 42 56 .34
anti-I2
 Positive 14 (37) 74 (26) .17
 Median level 29 33 .72
*

one BWI+ patient and 6 BWI- patients did not have serology BWI backwash ileitis