Table 1. Patient baseline characteristics in studies comparing transcatheter arterial embolization (TAE) with surgery for nonvariceal upper gastrointestinal bleeding after failed endoscopic hemostasis.

Study	n (TAE vs. surgery)	Age, mean, years		Gender, male, %		APACHE score, mean		ASA grades ASA 1&2: 3&4		More than one co-morbidity, %		NSAID or aspirin, %		Bleeding source, ulcer type
		TAE	Surg	TAE	Surg	TAE	Surg	TAE	Surg	TAE	Surg	TAE	Surg
Ang1 2012 13	54 (19 vs. 35)	71	70	74	60	n.a.	n.a.	5:14	22:13	68	46	21	11	Gastroduodenal
Venclauskas 2010 15	74 (24 vs. 50)	70	72	54	76	17.0	12.8	n.a.	n.a.	75	40	n.a.	n.a.	Duodenal
Wong 2011 14	88 (32 vs. 56)	73	71	66	71	n.a.	n.a.	19:13	30:26	87.5	87.5	25	17.9	Gastroduodenal
Larssen 2008 17	46 (36 vs. 10)	80	72	47	60	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	31	40	Duodenal
Erikson 2008 18	91 (40 vs. 51)	76	71	45	63	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	Gastroduodenal
Ripoll 2004 16	70 (31 vs. 39)	75	63	61	74	n.a.	n.a.	n.a.	n.a.	90.3	79.5	38.7	35.9	Gastroduodenal

APACHE, Acute Physiology and Chronic Health Evaluation; ASA, American Society of Anesthesiologists; NSAID, nonsteroidal anti-inflammatory drug; surg, surgery; n.a., not available.

¹Data updated directly from study principal investigators.