Table 6.

Risk for postoperative complications: multivariate analysis

	Overall complications OR (95% CI)	Intra-abdominal sepsis OR (95% CI)	Anastomotic leak OR (95% CI)
Age at surgery: < 17 years	aP = 0.69, bP = 0.55	cP = 0.72, dP = 0.96	eP = 0.24, fP = 0.29
vs. 17–40 years	1.23 (0.44–3.45)a	1.28 (0.34–4.75)c	2.56 (0.54–12.11)e
vs. > 40 years	1.46 (0.42–5.04)b	1.04 (0.21–5.08)d	2.79 (0.42–18.04)f
Gender: male	P = 0.79	P = 0.91	P = 0.66
vs. female	1.10 (0.55–2.17)	0.95 (0.37–2.42)	1.27 (0.43–3.79)
Behaviour of CD: perforating disease	P = 0.63	P = 0.04	P = 0.47
vs. non-perforating disease	1.18 (0.60–2.30)	2.67 (1.04–6.86)	0.67 (0.23–1.99)
Smoking: yes	P = 0.38	P = 0.19	P = 0.11
vs. no	1.45 (0.63–3.35)	2.02 (0.71–5.78)	2.76 (0.80–9.47)
Preoperative steroids: yes	P = 0.75	P = 0.52	P = 0.10
vs. no	1.12 (0.56–2.23)	1.34 (0.55–3.29)	2.33 (0.84–6.43)
Preoperative immunosuppressants: yes	P = 0.41	P = 0.47	P = 0.13
vs. no	0.73 (0.34–1.54)	0.68 (0.24–1.93)	0.35 (0.09–1.37)
Preoperative biologics: yes	P = 0.50	P = 0.84	P = 0.70
vs. no	0.79 (0.39–1.59)	1.10 (0.43–2.81)	1.23 (0.42–3.59)
Previous resection: yes	P = 0.16	P = 0.68	P = 0.048
vs. no	1.64 (0.82–3.30)	1.21 (0.48–3.03)	2.87 (1.01–8.18)
Blood transfusion: yes	P = 0.02	P = 0.36	P = 0.52
vs. no	3.02 (1.21–7.52)	1.72 (0.54–5.48)	1.61 (0.38–6.75)
Surgical procedure: open approach	P = 0.31	P = 0.18	P = 0.28
vs. laparoscopic approach	1.50 (0.68–3.32)	2.25 (0.68–7.40)	2.18 (0.54–8.82)
Type of anastomosis: side-to-side	P = 0.53	P = 0.12	P = 0.13
vs. end-to-end	0.80 (0.39–1.64)	0.48 (0.19–1.20)	0.43 (0.14–1.28)

OR: odds ratio; CI: confidence interval.