Table 2

Presence of afaC in E coli isolated from patients with CD, colitis and colon cancer compared with controls (using total number of E coli as the denominator)†

	afaC+	afaC−	p Value*
CD	39	32	0.0127
CRC	73	47	0.0008
UC	28	23	0.0204
Controls	11	28

*p Values obtained using χ² test (Yates-corrected).
†Presence or absence of afaC is based on PCR assay.
afaC, gene encoding afimbrial adhesin outer membrane usher protein; CD, Crohn's disease; CRC, colorectal cancer; UC, ulcerative colitis.