Comparative study of clinical efficacy of laparoscopic proximal gastrectomy with double-channel anastomosis and tubular gastroesophageal anastomosis

Table 1 Comparison of baseline clinicopathological data between the two groups of patients

Item		LPG-DCA (n = 33)	LPG-TGA (n = 30)	t/χ2/Z value	P value
Sex (n)	Male	23	21	0.001	0.980
	Female	10	9
Age (years)	mean ± SD	70.79 ± 9.66	69.13 ± 9.41	0.690	0.500
BMI (kg/m2)	mean ± SD	22.43 ± 2.40	22.98 ± 3.70	-0.700	0.480
TNM stage (n)	I	16	14	-0.306	0.760
	II	11	9
	III	6	7
Tumor size (cm)	mean ± SD	3.74 ± 0.51	3.60 ± 0.70	0.067	0.361
Tumour differentiation (n)	High	8	6	-0.570	0.569
	Medium	15	13
	Low	10	11
ASA grade (n)	I	9	10	-0.455	0.649
	II	18	15
	III	6	5

LPG: Laparoscopic gastrectomy; DCA: Double-channel anastomosis; TGA: Tubular gastric anastomosis; BMI: Body mass index.