Laparoscopic assisted pancreaticoduodenectomy: an important link in the process of transition from open to total laparoscopic pancreaticoduodenectomy

Table 5 Univariate and multivariate analyses of factors associated with major complication rate

Variables	OR	Univariate analysis	P	OR	Multivariate analysis	P
Variables	OR	95%CI	P	OR	95%CI	P
ASA
ASA I	0.355	0.106 1.196	0.095	0.385	0.107 1.381	0.143
ASA II	0.636	0.145 2.784	0.548	0.320	0.064 1.605	0.166
ASA III	Ref	Ref Ref	Ref	Ref	Ref Ref	Ref
Bigger tumor size	−0.649^a	−1.313 0.015	0.055	1.179	0.940 1.479	0.153
More harvested LN	2.418	1.000 5.850	0.050	0.961	0.919 1.005	0.078
Slower first flatus	−0.747^a	−1.331 -0.163	0.013	1.389	1.072 1.799	0.013

^aValues indicate mean difference; Abbreviations: ASA American society of anesthesiologists, CI confidence interval, LN lymph node, OR odds ratio, Ref reference variable

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