Introduction of laparoscopic gastrectomy for gastric cancer in a Western tertiary referral centre: A prospective cost analysis during the learning curve

Table 2 Baseline characteristics n (%)

	Open gastrectomy (n = 25, 32%)	Laparoscopic gastrectomy (n = 52, 68%)	P value
Age	70.0 (± 10, 46-85)	68 ± 9, 50-87)	0.470
Sex (male/female)	17/8	32/20	0.623
BMI1	25 ± 4, 18-36	25 ± 5, 15-38	0.824
CCI2			0.158
0-2	16 (64)	27 (52)
3-4	7(28)	11 (21)
> 4	2 (8)	14 (27)
Tumour stage3			0.681
0	0 (0.0)	2 (4)
11	4 (16)	11 (21)
12	6 (24)	15 (29)
2	5 (20)	4 (8)
31	4 (16)	10 (19)
32	3 (12)	4 (8)
4	3 (12)	6 (11)
Subtotal gastrectomy	16 (64)	38 (73)	0.436
Total gastrectomy	9 (36)	14 (27)
Neoadjuvant chemotherapy	11 (44)	36 (69)	0.046

¹BMI: Body mass index in kg/cm²;

²CCI: Charlson comorbidity index;

³In accordance with tumor node metastasis 5^th edition.