Comparison of short-term efficacy between totally laparoscopic gastrectomy and laparoscopic assisted gastrectomy for elderly patients with gastric cancer

Table 3 Uni- and multivariate analysis of postoperative complications for elderly patients

Factor	Univariate analysis		P value	Multivariate analysis		P value
	OR	95%CI		OR	95%CI
Sex			0.462
Male	1.000
Female	1.215	0.724-2.038
Age (yr)			0.027			0.157
< 75	1.000			1.000
≥ 75	1.655	1.058-2.587		1.422	0.874-2.313
BMI (kg/m2)			0.321
< 25	1.000
≥ 25	0.779	0.475-1.276
Surgical approach			0.011			0.011
LAG	1.000			1.000
TLG	0.555	0.352-0.874		0.539	0.335-0.865
aCCI score			0.074			0.416
0-4	1.000			1.000
> 4	1.603	0.952-2.699		1.276	0.709-2.294
ASA score			0.030			0.069
≤ II	1.000			1.000
> II	1.713	1.055-2.783		1.626	0.963-2.744
Tumor resection			0.846
Distal	1.000
Total	0.957	0.613-1.493
Neoadjuvant chemotherapy			0.752
No	1.000
Yes	1.165	0.452-3.000
pTNM stage			0.918
0-I	1.000
II	1.072	0.571-2.012
III	1.124	0.645-1.958
Tumor diameter (cm)			0.020			0.116
≤ 3	1.000			1.000
> 3	1.815	1.101-2.995		1.535	0.900-2.618
Operation time (min)			0.031			0.039
≤ 220	1.000			1.000
> 220	1.636	1.047-2.558		1.671	1.027-2.718
Estimated blood loss (mL)			0.120			0.895
≤ 200	1.000			1.000
> 200	1.628	0.880-3.012		1.047	0.530-2.070
Vascular invasion			0.035			0.223
No	1.000			1.000
Yes	1.620	1.034-2.538		1.349	0.834-2.185
Nerve invasion			0.667
No	1.000
Yes	0.901	0.559-1.451
Differentiation			0.760
Well/moderate	1.000
Poor/undifferentiated	1.075	0.676-1.708
R0 resection			0.197			0.263
No	1.000			1.000
Yes	1.715	0.755-3.895		1.639	0.690-3.892

Statistically significant P values are in bold (P < 0.05). LAG: Laparoscopic assisted gastrectomy; TLG: Totally laparoscopic gastrectomy; aCCI: Age-adjusted Charlson Comorbidity Index; BMI: Body mass index; ASA: American Society of Anesthesiologists; OR: Odd ratio.