. 2017 Oct 14;23(38):7016–7024. doi: 10.3748/wjg.v23.i38.7016

Table 3.

Univariate and multivariate analysis of factors associated with surgical and clinical recurrence free survival after 1st intestinal resection

	Univariate	Multivariate
	P value	HR	95%CI	P value
Clinical recurrence free survival
Type of operation	0.001^a			0.002^a
Elective		1
Emergency		1.856	1.246-2.763
Perianal disease after the 1^st operation	0.077	1.446	1.005-2.081	0.047^a
History of smoking	0.001^a	1.727	1.220-2.444	0.002^a
Surgical recurrence free survival
Age at diagnosis, yr	0.097			0.065
A1 ( ≤ 16)		3.512	0.944-13.068
A2 ( 17-40)		1.547	0.475-5.036
A1 ( > 40)
Type of operation	0.001^a			0.002^a
Elective		1
Emergency		2.431	1.394-4.240
Perianal disease after the 1^st operation	0.056	1.715	1.005-2.926	0.048^a
History of smoking	0.047^a	1.798	1.088-2.969	0.022^a
Postoperative use of anti-TNF	0.016^a	0.521	0.300-0.904	0.02^a

P < 0.05; HR: Hazard ratio.