Table 2. Angiographic and procedural characteristics.

	Normal reflow (n=4071)	Transient no reflow (n=213)	Persistent no reflow (n=45)	p*	p†
Infarct-related coronary artery
Left-anterior descending	1951 (47.9)	86 (40.4)	21 (46.7)	0.096	0.436
Right	1357 (33.3)	90 (42.3)	19 (42.2)	0.005	0.997
Left circumflex	670 (16.5)	32 (15.0)	2 (4.4)	0.062	0.057
Left main	80 (2.0)	5 (2.3)	3 (6.7)	0.075	0.129
Multivessel disease	2087 (51.3)	122 (57.3)	28 (62.2)	0.026	0.541
ACC/AHA B2/C lesion	3190 (78.4)	184 (86.4)	40 (88.9)	0.001	0.652
Pre-procedural TIMI flow grade
0	1577 (38.7)	111 (52.1)	36 (80.0)	<0.001	0.001
1	253 (6.2)	9 (4.2)	2 (4.4)	0.235	0.947
2	872 (21.4)	41 (19.2)	4 (8.9)	0.054	0.096
3	1275 (31.3)	45 (21.1)	3 (6.7)	<0.001	0.024
Drug-eluting stent implantation	3675 (90.3)	174 (81.7)	41 (91.1)	0.005	0.123
Total no. of stents	1.6±0.9	1.7±0.9	1.4±0.7	0.101	0.031
Total stent length (mm)	37.6±23.5	39.7±24.7	33.7±20.2	0.239	0.096
Mean stent diameter (mm)	3.2±0.4	3.3±0.4	3.2±0.5	<0.001	0.080
Stent overlapping	329 (8.1)	17 (8.0)	3 (6.7)	0.786	0.764
Thrombus aspiration	169 (4.2)	24 (11.3)	9 (20.0)	<0.001	0.111
Intra-aortic balloon counterpulsation	214 (5.3)	27 (12.7)	10 (22.2)	<0.001	0.097
Use of glycoprotein IIb/IIIa inhibitor	718 (17.6)	105 (49.3)	23 (51.1)	<0.001	0.825
Use of inotropics	765 (18.8)	53 (24.9)	22 (48.9)	<0.001	0.001

Data are expressed as mean±standard deviation or number (percentage). ^*p for trend, which compared patients with normal reflow, transient no reflow, and persistent no reflow. ^†p, which compared patients with transient no reflow and persistent no reflow. ACC: American college of cardiology, AHA: American heart association, TIMI: thrombolysis in myocardial infarction