Table 3.

Univariate analysis of risk factors for death from other diseases

Variables	Number of patients	Incidence rate of DOD (%)		P value
		5-year	10-year
Age (years)				< 0.001
< 70	529	2.6	8.2
≥ 70	281	15.3	32.5
Gender				0.233
Male	587	7.5	17.9
Female	223	5.8	12.8
Performance status (ECOG)				< 0.001
0	679	3.8	10.9
1/2/3	131	23.7	44.6
Body mass index (kg/m2)				0.019
< 22.0	334	8.7	21.3
≥ 22.0	476	5.9	13.1
Charlson Comorbidity Index score				< 0.001
0	542	2.5	9.3
1/2	232	13.8	25.8
≥ 3	36	33.3	64.1
Cardiovascular disease				< 0.001
Absent	749	6.4	15.3
Present	61	14.8	32.0
Respiratory disease				< 0.001
Absent	756	6.1	15.0
Present	54	20.4	38.4
Renal disease				< 0.001
Absent	775	5.5	14.3
Present	35	40.0	63.1
Liver disease				0.033
Absent	775	6.5	15.8
Present	35	20.0	31.7
Endocrine and collagen disease				0.006
Absent	711	6.2	15.3
Present	99	13.1	25.1
Neurological disease				< 0.001
Absent	759	6.2	15.2
Present	51	19.6	37.5
Type of gastrectomy				< 0.001
TG	225	10.2	24.1
DG/PG/PPG	585	5.8	13.6
Lymphadenectomy				< 0.001
D1/1+	446	10.3	22.0
D2/3	364	3.0	10.0
Combined resection				0.122
Absent	700	7.4	16.4
Present	110	4.5	16.7
Postoperative stay in hospital (days)				0.001
< 20	450	5.3	12.3
≥ 20	360	9.2	21.5
Operative time (min.)				0.044
< 250	337	11.0	21.0
≥ 250	473	4.2	13.2
Blood loss (mL)				0.813
< 250	422	7.6	15.6
≥ 250	388	6.4	17.1
Postoperative complications*				< 0.001
Absent	602	5.2	12.9
Present	208	12.5	27.2
Pathological stage†				0.002
pStage I	661	5.4	14.3
pStage II/III	149	14.1	26.1

*Grade II or higher according to the Clavien‒Dindo classification system

†Japanese classification of gastric carcinoma: 3rd English edition

DOD, death from other diseases; TG, total gastrectomy; DG, distal gastrectomy; PG, proximal gastrectomy; PPG, pylorus preserving gastrectomy