Control observation of different digestive tract reconstruction methods in total gastrectomy for gastric cancer

Table 3 Comparison of laboratory indicators related to gastrointestinal barrier function between the two groups, mean ± SD

Group	n	D-lactic acid (mg/L)		DAO (IU/L)		ETX (EU/mL)
		Before operation	Postoperative 3 days	Before operation	Postoperative 3 days	Before operation	Postoperative 3 days
A group	90	2.43 ± 0.50	3.27 ± 0.61a	1.52 ± 0.40	2.11 ± 0.48a	0.41 ± 0.08	1.10 ± 0.21a
B group	82	2.30 ± 0.48	3.56 ± 0.67a	1.44 ± 0.45	2.24 ± 0.55a	0.43 ± 0.11	1.16 ± 0.24a
t		1.736	-2.971	1.234	-1.655	-1.372	-1.748
P value		0.084	0.003	0.219	0.100	0.172	0.082

^aP < 0.05.

P values compared with the preoperative group. DAO: Diamine oxidase; ETX: Endotoxin.