Table 7. Melanosis coli was associated with a significantly increased incidence of distal ileum ulcer.

Groups	Ulcers at distal ileum		Odds ratio (95% CI)	p value
	Yes	No
Control (n = 235)	0 (0%)	235 (100%)	1.09 (1.03–1.14)	<.001*
Melanosis coli (n = 138)	11 (8.0%)	127 (92.0%)

*p<0.05