TABLE 1.

Trends in characteristics of patients (N = 2733) with gastric cancer who underwent gastrectomy, by hospital volume and study period

Characteristic	Hospital volume
	Low			Intermediate			High
	1999–2001 (n = 386), %	2010–2015 (n = 627), %	p value	1999–2001 (n = 1247), %	2010–2015 (n = 1321), %	p value	1999–2001 (n = 231), %	2010–2015 (n = 785), %	p value
Male	58	57	0.733	62	58	0.039	70	66	0.239
Age ≥ 75 years	36	31	0.095	28	25	0.084	15	14	0.664
NH White	48	39	0.006	47	38	< 0.001	74	61	< 0.001
NH African American	15	15	0.988	13	13	0.982	9	12	0.224
Hispanic	29	37	0.009	34	39	0.009	9	12	0.224
Charlson comorbidity score ≥ 1	35	60	< 0.001	33	54	< 0.001	23	44	< 0.001
High-school graduate	73	79	0.031	70	78	< 0.001	76	83	0.018
Primarily English speaking	72	62	0.001	61	60	0.606	77	68	0.008
Below median income	72	71	0.72	75	66	< 0.001	70	59	0.002
Living within 100 miles of a high-volume hospital	64	44	< 0.001	62	45	< 0.001	38	59	< 0.001
Metastasis at presentation	23	11	< 0.001	23	12	< 0.001	19	9	< 0.001
Total gastrectomy	26	26	0.975	37	35	0.292	54	50	0.272
Node dissection	5.4	8	0.125	6.5	22	< 0.001	38	59	< 0.001
Splenectomy	10	4	< 0.001	12	8	0.001	9.1	5	0.019
Emergency admission	18	25	0.008	15	15	0.996	6.5	5	0.364

p values compare proportions between 1999 and 2001 and 2010 and 2015

NH non-Hispanic