Table 1.

Characteristics of the included NSTE-ACS studies.

Sources	Study Design	Number of Deaths/Patients who Underwent Invasive Treatment for 30 days	Number of Deaths/Patients who Underwent Conservative Treatment for 30 days	Number of Deaths/Patients who Underwent Invasive Treatment for 1 year	Number of Deaths/Patients who Underwent Conservative Treatment for 1 year
OCS
Leslie et al., (11) 2003*△	Retrospective	100/4535	97/3362	181/4535	309/3362
Timm et al., (12) 2007△	Prospective			101/945	227/815
Cindy et al., (13) 2008△	Prospective			55/1382	82/754
Rogério et al., (14) 2009*△	Prospective	1/386	13/334	16/386	46/334
Kouraki et al., (15) 2011△	Prospective			98/1215	185/771
Joakim et al., (16) 2011△	Prospective			814/28112	2381/18343
RCTs
William et al., (17) 1998*△	RCT	33/442	7/256	52/442	24/256

NSTE-ACS: non-ST-elevation acute coronary syndrome; RCT: randomized controlled trials. * Included in the meta-analysis of all-cause mortality within 30 days for patients with NSTE-ACS. △ The seven studies included in the meta-analysis of all-cause mortality within 1 year for NSTE-ACS patients.