Effects of Appendectomy on the Onset and Course of Ulcerative Colitis in Chinese Patients

Table 1

Appendectomy status per localization in UC patients and controls.

Location of disease	All patients	Appendectomy (%)	Control (%)
Proctitis	40	4 (10.00%)	2 (5.00%)	0.687
Left-sided colitis	170	5 (2.94%)	7 (4.12%)	0.774
Extensive colitis	192	2 (1.04%)	7 (3.65%)	0.180
Total	402	11 (2.74%)	16 (3.98%)	0.442

Pairwise matched analyses.