Prognosis factors of advanced gastric cancer according to sex and age

Table 5 Analysis of lymph node metastasis using the chi-squared test and a logistic regression model

Characteristic	Lymph node metastasis		Univariate	Multivariate
	Yes	No	P value	OR	95%CI	P value
Sex
Male	766 (71)	618 (66.7)	0.040	1.000
Female	313 (29)	308 (33.3)		0.840	0.682-1.034	0.099
Age
≤ 60 yr	573 (53.1)	496 (53.6)	0.837	1.000
> 60 yr	506 (46.9)	430 (46.4)		1.035	0.854-1.255	0.726
Tumour size
≤ 5 cm	580 (53.8)	316 (34.1)	0.001	1.000
> 5 cm	499 (46.2)	610 (65.9)		0.552	0.453-0.674	0.001
Lymphovascular invasion
Yes	415 (38.5)	608 (65.7)	0.001	0.356	0.294-0.431	0.001
No	664 (61.5)	318 (34.3)		1.000
Depth of invasion
Muscularis propria	252 (23.4)	252 (27.2)		0.647	0.297-1.409	0.273
Sub-serosal	453 (42)	412 (44.5)		0.711	0.329-1.537	0.386
Serosal exposed	327 (30.3)	233 (25.2)		0.908	0.418-1.975	0.808
Serosal invasion	30 (2.8)	18 (1.9)		1.078	0.414-2.809	0.877
Histology
Tubular adenocarcinoma (well)	46 (4.3)	16 (1.8)	0.011	1.000
Tubular adenocarcinoma (moderate)	342 (32.3)	282 (31)		0.560	0.301-1.043	0.068
Tubular adenocarcinoma (poorly)	519 (49)	473 (52)		0.583	0.315-1.080	0.086
Signet ring cell carcinoma	119 (11.2)	100 (11)		0.676	0.347-1.318	0.251
Mucinous adenocarcinoma	33 (3.1)	38 (4.2)		0.474	0.218-1.029	0.059

OR: Odds ratio; CI: Confidence interval.