Table 1.

The characteristics of included studies.

Study	Year	No. of participants	Study design	Population	Follow-up time	Quality assessment
Hong et al. [7]	2014	206/328	Observational	(1)	3 months, 1 year, 2 years	8
Kim et al. [8]	2011	487/487	Observational	(2)	3 years	8
Chieffo et al. [9]	2013	142/142	RCT	(3)	30 days, 2 years	7
Yoon et al. [10]	2013	662/912	Observational	(4)	1 year	8
Park et al. [11]	2012	619/802	Observational	(5)	1 year	8
Claessen et al. [12]	2011	631/873	Observational	(1)	30 days, 1 year, 2 years	9
Kim et al. [14]	2011	269/274	Observational	(6)	1 year	9
de la Torre Hernandez et al. [13]	2014	505/505	Observational	(7)	3 years	8
Ahn et al. [15]	2013	49/36	Observational	(8)	2 years	7
Chen et al. [16]	2012	324/304	Observational	(9)	1 year	8
Park et al. [21]	2009	756/219	Observational	(10)	3 years	9
Kim et al. [39]	2015	201/201	RCT	(11)	1 year	7
Witzenbichler et al. [40]	2013	3349/5234	Observational	(1)	1 year	9
Youn et al. [26]	2011	125/216	Observational	(12)	30 days, 1 year, 3 years	8
Roy et al. [22]	2008	884/884	Observational	(1)	30 days, 1 year	9
Gao et al. [17]	2014	291/291	Observational	(7)	1 year	9
Hong et al. [18]	2014	700/700	Observational	(6)	1 year	9
Kim et al. [20]	2017	122/74	Observational	(10)	30 days, 3 years	9
Tan et al. [23]	2015	40/40	RCT	(10)	2 years	6
Tian et al. [24]	2017	713/1186	Observational	(10)	30 days, 1 year, 3 years	9

RCT: randomized controlled trial; (1) patients were treated by DES; (2) patients with bifurcation lesions; (3) patients with coronary complex lesions; (4) patients with coronary short-length lesions; (5) patients were treated by PCI; (6) patients with coronary long lesions; (7) patients with coronary left main lesions; (8) patients with diffuse coronary artery disease; (9) patients with coronary bifurcation lesions; (10) patients with unprotected left main coronary artery lesions; (11) patients with chronic total occlusion; (12) patients with myocardial infarction.