Staging laparoscopy improves treatment decision-making for advanced gastric cancer

Table 5 Relationship between clinicopathologic features determined by clinical staging and peritoneal metastasis or positive cytology (n = 582)

Characteristic	P-negative(n = 457)	P-positive(n = 125)	P value
Gender			0.001
Male (n = 397)	328	69
Female (n = 185)	129	56
Age			0.573
< 65 (n = 441)	334	88
≥ 65 (n = 141)	123	37
ECOG score			0.751
0 (n = 224)	175	49
1 (n = 291)	227	64
2 (n = 67)	55	12
Tumor size (mm)			< 0.001
< 40 (n = 238)	215	21
≥ 40 (n = 346)	242	104
Upper third			0.903
Not involved (n = 455)	358	97
Involved (n = 127)	99	28
Middle third			< 0.001
Not involved (n = 401)	333	68
Involved (n = 181)	124	57
Lower third			0.750
Not involved (n = 200)	159	41
Involved (n = 382)	298	84
fT stage			< 0.001
T2/3 (n = 153)	145	8
T4a (n = 262)	232	30
T4b (n = 167)	80	87
Borrmann type			< 0.001
Type I or II (n = 285)	265	20
Type III (n = 253)	166	87
Type IV (n = 44)	26	18
Differentiation			0.293
Differentiated (n = 577)	454	123
Undifferentiated (n = 5)	3	2
Lymph node metastasis			0.305
Negative (n = 240)	183	57
Positive (n = 342)	274	68

fT stage: Final T stage; P-negative: No peritoneal metastasis and positive cytology; P-positive: Peritoneal metastasis or positive cytology.