Table 3.

Multivariate Poisson regression modelling demonstrates the relative risk of mortality for included patient and operative factors.

	Relative Risk	95% Confidence Interval	p-value
Sex	1.73	0.52 – 5.72	0.4
Age	1.05	1.02 – 1.08	< 0.001
Moderate/severe anemia	1.45	0.32 – 6.52	0.6
Consultant involved	0.62	0.28 – 1.38	0.2
Intra-abdominal complications	2.88	1.28 – 6.46	0.01
Wound class
Clean	Ref	---	---
Clean-contaminated	1.99	0.24 – 16.19	0.5
Contaminated	5.46	0.70 – 42.86	0.1
Dirty	2.10	0.26 – 16.70	0.5
ASA class
I	Ref	---	---
II	1.24	0.46 – 3.33	0.7
III	2.45	0.69 – 8.66	0.2
Postoperative Disposition
Ward	Ref	---	---
HDU (Step-down)	1.74	0.47 – 6.40	0.4
ICU	5.40	0.69 – 44.68	0.1