Role of 3DCT in laparoscopic total gastrectomy with spleen-preserving splenic lymph node dissection

Table 4 Subgroup comparison according to body mass index

	BMI < 23 kg/m2 (n = 201)			BMI≥23 kg/m2 (n = 111)
	Group NO-3DCT	Group 3DCT	P value	Group NO-3DCT	Group 3DCT	P value
No. of patients	56	145		25	86
Age, yr	57.73 ± 11.59	60.95 ± 11.43	0.745	63.40 ± 7.72	61.99 ± 8.37	0.807
Operation time, min	188.09 ± 52.63	171.38 ± 26.32	0.028	187.92 ± 32.00	177.44 ± 28.17	0.121
Operation time at splenic hilum, min	23.74 ± 9.56	19.39 ± 5.46	0.001	26.17 ± 11.01	20.27 ± 5.84	0.003
Blood loss, mL	61.27 ± 35.94	51.83 ± 22.66	0.073	48.33 ± 7.61	49.41 ± 34.73	0.670
Blood loss at splenic hilum, mL	17.98 ± 8.12	13.27 ± 4.96	0.000	17.78 ± 11.28	14.29 ± 3.39	0.054
No. of retrieved lymph nodes	38.38 ± 12.25	46.18 ± 16.86	0.002	42.09 ± 16.15	37.86 ± 11.48	0.172
No. of retrieved No. 10 lymph nodes	2.67 ± 2.27	3.20 ± 2.42	0.162	2.04 ± 1.94	2.23 ± 2.06	0.692
Postoperative hospital stay, d	10.69 ± 2.29	11.62 ± 5.84	0.256	11.79 ± 3.77	13.42 ± 7.36	0.299
Postoperative complications, n	9	18	0.495	2	17	0.169

3DCT: Computed tomography with 3D imaging; BMI: Body mass index.