Table 4.

Independent associated factors of the no-reflow phenomenon after primary PCI

Variable	Odds ratio	95% confidence interval	P
Age (for a 1-year increase)	1.032	1.014-1.051	0.001
Hypertension	0.653	0.422-1.011	0.056
Number of Q waves (for 1 increase)	1.122	1.019-1.236	0.020
History of previous MI	0.381	0.130-1.122	0.080
Use of statins	0.411	0.18-0.938	0.035
Lesion length (for 1 mm increase)	1.025	1.004-1.046	0.017
Thrombus grade (for a 1-grade increase)	1.881	1.570-2.253	<0.001
The infarct-related artery SYNTAX score	1.042	1.016-1.069	0.002

P value for the Hosmer–Lemeshow test=0.935, area under the receiver operating characteristics curve=0.784 with 95% confidence interval=0.742–0.826 and P<0.001