Table 3.

Hospital/Provider Characteristics After Matching

	GST		SIG		SMD*
	N	%	N	%
	491	100.00%	491	100.00%
Urban hospital, N/%	485	98.78%	490	99.80%	0.05
Teaching hospital, N/%	170	34.62%	181	36.86%	0.05
Hospital region, N/%
Midwest	90	18.33%	99	20.16%	0.05
Northeast	117	23.83%	110	22.40%	0.03
South	282	57.43%	282	57.43%	0.00
West	2	0.41%		0.00%	0.04
Hospital bed size, N/%
000–099	3	0.61%	0	0.00%	0.04
100–199	39	7.94%	33	6.72%	0.04
200–299	55	11.20%	63	12.83%	0.04
300–399	273	55.60%	284	57.84%	0.05
400–499	58	11.81%	51	10.39%	0.05
500+	63	12.83%	60	12.22%	0.02
Annual LSG volume, N/%
0–150	47	9.57%	41	8.35%	0.04
151–300	209	42.57%	199	40.53%	0.04
301–450	152	30.96%	159	32.38%	0.03
450+	83	16.90%	92	18.74%	0.05
Procedural physician specialty, N/%
Abdominal surgery or gastroenterology	12	2.44%	15	3.05%	0.04
General surgery	458	93.28%	461	93.89%	0.03
Other/unknown	21	4.28%	15	3.06%	0.04

Note: *A standardized mean difference <0.10 is considered indicative of good covariate balance.

Abbreviations: GST, ECHELON FLEX™ GST system; SMD, absolute standardized mean difference; SIG, Signia^TM Stapling System.