Table 2.

Univariate and multivariate analysis of factors associated with peritoneal recurrence in the training cohort.

Characteristics	Univariate analysis		Multivariate analysis
	Odds Ratio (95% CI)	P value	Odds Ratio (95% CI)	P value
Age
≤ 60	Reference
> 60	0.828 (0.481—1.425)	0.496
Gender
Male	Reference
Female	0.833 (0.452—1.536)	0.559
Tumor site
Body	Reference		Reference
Cardia	0.885 (0.442—1.771)	0.730	0.653 (0.291—1.463)	0.300
Antrum	0.466 (0.234—0.928)	0.030	0.443 (0.201—0.977)	0.044
Whole	2.286 (0.794—6.580)	0.125	0.809 (0.241—2.714)	0.731
Lauren type
Intestinal	Reference		Reference
Diffuse	1.911 (0.983—3.717)	0.056	0.864 (0.380—1.966)	0.728
Mixed	1.951 (0.920—4.136)	0.081	1.084 (0.442—2.659)	0.860
Uncertain	1.682 (0.520—5.435)	0.385	0.596 (0.140—2.543)	0.485
T stage
T1–3	Reference		Reference
T4	6.716 (2.678—16.843)	< 0.001	4.330 (0.734—25.542)	0.106
N stage
N0	Reference		Reference
N1–2	3.524 (1.501—8.275)	0.004	3.776 (0.662—21.529)	0.135
N3	7.618 (3.291—17.635)	< 0.001	7.851 (1.114—55.325)	0.039
Pathological stage
I	Reference		Reference
II	3.538 (0.887—14.121)	0.074	0.508 (0.045—5.675)	0.582
III	11.141 (3.209—38.672)	< 0.001	0.406 (0.015—10.949)	0.592
Vascular/lymphatic invasion
No	Reference		Reference
Yes	2.039 (1.112—3.739)	0.021	0.899 (0.412—1.958)	0.788
Perineural invasion
No	Reference		Reference
Yes	2.081 (0.994—4.358)	0.052	1.329 (0.551—3.206)	0.526
Adjuvant chemotherapy
Yes	Reference
No	0.949 (0.543—1.656)	0.853
Preoperative CEA
Normal	Reference		Reference
Elevated	2.336 (1.343—4.065)	0.003	2.446 (1.150—5.201)	0.020
Preoperative CA199
Normal	Reference
Elevated	1.418 (0.814—2.472)	0.218
Postoperative CEA
Normal	Reference		Reference
Elevated	1.990 (1.100—3.599)	0.023	1.057 (0.458—2.440)	0.896
Postoperative CA199
Normal	Reference		Reference
Elevated	2.692 (1.310—5.534)	0.007	2.703 (1.134—6.447)	0.025