Table 2.

Baseline Clinical and Demographic Characteristics of the Studies Included in the Meta‐Analysis

Author/Year		Age, y	Male, %	Hypertension, %	DM, %	Hyperlipidemia, %	Smoking, %	Prior MI, %	3 Vessel, %	EF, %	CTO LAD%	CTO LCx	CTO RCA	Staged CTO After Primary PCI
Yang 201114	PCI	66	82	70	36	20	39	26	68	46	38	33	36	7 to 10 d
	Non PCI	69	82	76	37	22	37	33	65	47	37	39	29
Shi 201415	PCI	N/A	78	65	23	55	45	28	51	N/A	36	30	34	7 to 10 d
	Non PCI	N/A	83	69	23	58	40	33	48	N/A	42	29	29
Valenti 201416	PCI	64	85	55	17	36	50	19	59	36	33	33	34	Up to 30 d
	Non PCI	69	73	67	15	41	30	29	48	38	17	29	55
Watanabe 201617	PCI	66	84	73	37	N/A	42	10	N/A	48	31	36	33	4 to 17 d
	Non PCI	67	79	84	23	N/A	47	19	N/A	49	27	44	29
Deng 201718	PCI	65	79	78	33	80	58	32	33	49	31	33	36	7 to 28 d
	Non PCI	68	79	74	28	73	52	35	33	50	39	29	32
Henriques 201610	PCI	60	89	40	15	35	52	13	42	41	24	32	43	Within 7 d
	Non PCI	60	82	45	16	34	49	16	44	42	35	24	51

CTO indicates chronic total occlusion; DM, diabetes mellitus; EF, ejection fraction; LAD, left anterior descending artery; LCx, left circumflex artery; MI, myocardial infarction; N/A, not available; PCI, percutaneous coronary interventions; RCA, right coronary artery.