A comparison of the operative outcomes of D1 and D2 gastrectomy performed at a single Western center with multiple surgeons: a retrospective analysis with propensity score matching

Table 3 Factors associated with postoperative mortality and morbidity for patients undergoing gastrectomy with D1/D1+ or D2 lymphadenectomy

Variables	Before PSM (n = 204)							After PSM (n = 78)
	No. of patients	^aComplications			30-day mortality			No. of patients	^aComplications			30-day mortality
	No. of patients	n	%	p	n	%	p		n	%	p	n	%	p
Age				0.008*			0.557				0.006*			0.265
< 70	108	57	(53%)		2	(2%)		43	16	(37%)		0	(0%)
≥ 70	96	68	(71%)		3	(3%)		35	24	(69%)		1	(3%)
Gender				0.892			0.117				0.624			0.502
Male	138	85	(62%)		5	(4%)		54	28	(52%)		1	(2%)
Female	66	40	(61%)		0	(0%)		24	11	(46%)		0	(0%)
BMI				0.502			0.228				0.784			0.595
≥ 30	29	15	(52%)		1	(3%)		17	8	(47%)		0	(0%)
< 30	135	79	(59%)		1	(1%)		61	31	(51%)		1	(2%)
Hemoglobin level				0.830			0.075				0.530			0.688
≤ 100	25	17	(68%)		2	(8%)		12	7	(58%)		0	(0%)
> 100	173	107	(62%)		3	(2%)		66	31	(47%)		1	(2%)
Tumor location				0.009*			0.406				0.070			0.302
Proximal, middle	81	57	(70%)		2	(2%)		38	23	(61%)		1	(3%)
Distal	107	55	(51%)		1	(1%)		40	16	(40%)		0	(0%)
Tumor stage (TNM)				0.145			0.768				0.425			0.087
III, IV	67	46	(69%)		2	(3%)		19	11	(58%)		1	(5%)
I, II	131	76	(58%)		3	(2%)		55	26	(47%)		0	(0%)
Chemotherapy				0.849			0.699				1.000			0.252
Yes	99	60	(61%)		2	(2%)		34	17	(50%)		0	(0%)
No	105	65	(62%)		3	(3%)		44	22	(50%)		1	(2%)
Gastrectomy type				0.020*			0.021*				0.018*			0.076
Total	66	48	(73%)		4	(6%)		19	14	(74%)		1	(5%)
Partial	138	77	(56%)		1	(1%)		59	25	(42%)		0	(0%)
Lymphadenectomy type				0.314			0.085				0.113			0.314
D1/D1+	54	30	(56%)		3	(6%)		39	16	(41%)		1	(3%)
D2	150	95	(63%)		2	(1%)		39	23	(59%)		0	(0%)
Splenectomy +/− pancreatectomy				0.783			0.694				1.000			0.870
Yes	6	4	(67%)		0	(0%)		2	1	(50%)		0	(0%)
No	198	121	(61%)		5	(3%)		76	38	(50%)		1	(1%)

ISSN: 1477-7819