Table 3.

Logistic regression of parameters, which may affect the positive result of peritoneal lavage examination.

Parameter		Odds ratio (HR)	Confidence interval −95%+95%	Standard error	p
Location	Cardia	0.808	0.207–3.148	0.634	0.758
	Body and/or prepyloric region	0.120	0.035–0.412	0.629	<0.001
	Entire stomach	19.800	5.188–75.568	0.683	<0.001
Degree of differentiation	G1	Assessment not possible – G1 was not present in the fcc (+) group
	G2	0.257	0.055–1.208	0.789	0.085
	G3	5.000	1.068–23.412	0.788	0.041
Type according to Lauren	Intestinal	0.150	0.032–0.700	0.787	0.015
	Diffuse	7.042	1.862–26.636	0.679	0.004
	Mixed	0.442	0.052–3.690	1.082	0.451
T3/T4		Not determined—all fcc (+) patients had T3/T4 stage
N+		Not determined—all patients from fcc (+) group had N (+) stage
Macroscopically visible peritoneal dissemination		1.932	0.588–6.345	0.607	0.277