Machine learning identifies the risk of complications after laparoscopic radical gastrectomy for gastric cancer

Table 4 Univariate analysis of severe complications after laparoscopic total gastrectomy in gastric cancer patients

Variate	No-severe complication (%)	Severe complication (%)	t/χ2	P value	OR	95%CI
Age group
Age < 65	332	30	4.381	0.036
Age ≥ 65	181	29			1.733	1.032-3.047
Gender
Male	372	44	0.113	0.736
Female	141	15			0.899	0.485-1.667
BMI group
BMI ≤ 28	481	53	1.319	0.251
BMI > 28	32	6			1.702	0.680-4.257
Hb	129.1 ± 25.1	135.2 ± 25.7	-1.754	0.08	1.01	0.999-1.021
ALB	40.4 ± 3.1	39.7 ± 3.2	1.664	0.097	0.928	0.851-1.013
Tumor size	4.0 ± 2.2	3.8 ± 1.9	0.674	0.501	0.95	0.826-1.092
Bleeding volume	150.2 ± 133.5	130.2 ± 70.0	1.114	0.255	0.998	0.995-1.001
Operative time	248.9 ± 73.9	229.0 ± 62.5	1.983	0.048	0.996	0.991-1.000
Intraoperative blood transfusion	37.1 ± 180.8	10.17 ± 54.8	{0.099}	0.754	0.998	0.995-1.002
Severe heart disease
No	512	59	0.115	0.734
Yes	1	0
Severe lung disease
No	511	56	13.461	< 0.001
Yes	2	3			13.687	2.239-83.665
Hypertension
No	452	49	1.245	0.264
Yes	61	10			1.512	0.728-3.140
Diabetes
No	489	53	3.21	0.073
Yes	24	6			2.307	0.902-5.896
Surgerical type
totally	230	35	4.467	0.035
assisted	283	24			0.557	0.322-0.964
ECOG
0	426	34	22.379	< 0.001
1	77	21			3.417	1.883-6.199
2	10	4			5.012	1.493-16.824
ASA
2	505	51	28.024	< 0.001
3	8	8			9.902	3.566-27.499

BMI: Body mass index; ASA: Aneshesiologists; ECOG: Eastern Collaborative Oncology Group.