Table 1. Baseline Characteristics of the Intention-to-Treat Population.

Characteristic	Patients, No.		P Value
	Surgery Alone (n = 271)	Surgery Plus EIPL (n = 279)
Age, mean (SD), y	60.8 (10.7)	60.6 (10.8)	.87
Sex
Male	196	194	.47
Female	75	85
Smoking status
Yes	81	91	.49
No	190	188
BMI, mean (SD)	21.97 (3.01)	22.16 (3.42)	.47
Tumor location
Upper third	85	81	.78
Middle third	75	72
Lower third	101	116
Total	10	10
Tumor size, mean (SD), cm	5.27 (3.02)	5.25 (2.49)	.91
Pathologic T category
T3	72	71	.77
T4	199	208
Pathologic N category
N0	50	47	.73
N1	49	61
N2	72	70
N3	100	101
Borrmann classificationa
I	14	13	.53
II	86	85
III	141	159
IV	30	22

Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); EIPL, extensive intraoperative peritoneal lavage.

^aThe Borrmann classification scheme is explained in Kim et al.¹⁵