Table 3.

Multivariable regression analysis of predictors of SSI in the derivation cohort

Characteristic	Odds ratio (OR)	95% Confidence interval	p-value
Obstructive jaundice	1.22	0.77–1.9	0.38
Neoadjuvant chemotherapy for PDAC	5.4	2.6–10.9	<0.001
Neoadjuvant chemoradiation for PDAC	0.59	0.22–1.6	0.30
Preoperative biliary stent/drain	5.9	3.7–9.4	<0.001
PRBC transfusion during operation	1.2	0.73–2.0	0.47
Operative time > 7 h	1.3	0.82–2.1	0.26
Absence of superficial wound vacuum dressing	6.7	1.3–24.9	0.02
Concomitant vascular resection	1.47	0.72–3.0	0.28

Bold values are considered significant, with a p value < 0.05.