Table 3.

Univariate and multivariate analysis of compliance with a SAP bundle (antibiotic selection, dose, and timing given per protocol).

Characteristic	Univariate Analysis (N = 269)		Multivariate Analysis (N = 261)
	OR (95% CI)	P-value	OR (95% CI)	P-value
Intervention	5.1 (2.7–9.4)	0.00	6.1 (3.0–12.3)	0.00
Age	1.0 (0.99–1.0)	0.94	0.99 (0.97–1.0)	0.36
Sexa	1.2 (0.67–2.0)	0.59	0.97 (0.52–1.8)	0.92
Procedureb	–	–	–	–
Colon surgery	1.4 (0.76–2.7)	0.26	2.7 (0.99–7.2)	0.05
Rectal surgery	1.9 (0.22–17.1)	0.55	6.6 (0.55–79.2)	0.14
Small bowel surgery	1.6 (0.42–5.8)	0.51	5.1 (0.86–30.0)	0.07
Laparoscopic	1.2 (0.61–2.5)	0.55	1.5 (0.51–4.4)	0.46

^aReference group = Male.

^bReference group = Appendix surgery.