. 2019 May 27;11(5):261–270. doi: 10.4240/wjgs.v11.i5.261

Table 2.

Risk factors of post-operative complications in multivariate analyses

Variable	Units	OR	95%CI	P value
Indication	CC vs CD	0.80	0.54-1.17	0.25
Gender	Male vs female	1.53	1.28-1.83	< 0.01^a
Age	Years	1.01	1.01-1.02	< 0.01^a
BMI	≤ 18.5 vs 18.6-25	1.37	0.87-2.17	0.18
	25.1-30 vs 18.6-25 > 30 vs 18.6-25	0.88 1.11	0.72-1.07 0.87-1.42	0.21 0.39
ASA grade	IV-V vs I-III	1.63	1.04-2.56	0.03
IHD	IHD vs no IHD	1.17	0.94-1.46	0.16
Diabetes	History of diabetes vs no history of diabetes	1.05	0.84-1.32	0.66
Smoking	Ex-smoker vs never smoker	1.27	[1.02-1.58	0.04^a
	Current smoker vs never smoker	1.31	1.01-1.70	0.04^a
Haemoglobin		0.99	0.95-1.03	0.62
Operating surgeon	General surgeon vs colorectal surgeon	1.11	0.91-1.34	0.31
Urgency	Emergency vs eLective/expedited	1.55	1.18-2.05	< 0.01^a
De-functioning/primary stoma	De-functioning stoma vs no de-functioning stoma	1.13	0.52-2.45	0.77
Duration of operation	≥ 120 min vs < 120 min	1.34	1.13-1.59	< 0.01^a
Operative approach	Converted vs laparoscopy	0.97	0.72-1.32	0.85
	Open vs laparoscopy	1.52	1.24-1.85	< 0.01^a
Unplanned intraoperative adverse events	Any UIAES vs no UIAEs	1.54	1.21-1.95	< 0.01^a
CRP		1.01	1.00-1.01	< 0.01^a
Previous surgery	Any previous surgery vs no previous surgery	1.26	1.04-1.52	0.02^a
Resection type	Right hemicolectomy vs ileocecal resection	0.86	0.63-1.19	0.37
Skin closure	Stapled vs suture	1.44	1.19-1.75	< 0.01^a

Logistic regression. The model was adjusted for: Gender, age, BMI, ASA grade, ischemic heart disease, diabetes, smoking, haemoglobin, operating surgeon, urgency, defunctioning/primary stoma, duration of operation, operative approach, anastomosis type, unplanned intraoperative adverse events, CRP, previous surgery, resection type and skin closure.

Significant outcomes. IHD: Ischemic heart diseases; CRP: C-reactive protein; BMI: Body mass index; CD: Crohn’s disease; CC: Colon cancer; UIAEs: Unplanned intraoperative adverse events; ASA: American Society of Anesthesiology score.