Cardiology Research and Practice

Research Article

Prognostic Value of the Residual SYNTAX Score on In-Hospital and Follow-Up Clinical Outcomes in ST Elevation Myocardial Infarction Patients Undergoing Percutaneous Coronary Interventions

Table 6

Univariate and multivariate cox regression analysis for determining the risk factors associated with long-term MACE.


Variables	Univariate analysis		Multivariate analysis for SS		Multivariate analysis for RSS
Variables	HR (95% CI)		HR (95% CI)		HR (95% CI)

Age	1.039 (1.021–1.057)	<0.001	1.006 (0.982–1.03)	0.619	1.012 (0.989–1.037)	0.309
Male gender	0.679 (0.438–1.053)	0.084	1.145 (0.692–1.894)	0.598	1.208 (0.728–2.005)	0.463
HT	1.101 (0.719–1.688)	0.657	—	—	—	—
DM	1.635 (1.088–2.458)	0.018	0.964 (0.56–1.659)	0.894	1.016 (0.59–1.749)	0.954
HL	0.986 (0.647–1.501)	0.946	—	—	—	—
KAH	1.308 (0.833–2.054)	0.244	—	—	—	—
Smoking	0.554 (0.36–0.853)	0.007	0.68 (0.413–1.118)	0.128	0.712 (0.436–1.162)	0.174
Hba1c	1.155 (1.035–1.288)	0.010	1.112 (0.95–1.303)	0.186	1.106 (0.943–1.296)	0.214
CreCl	0.988 (0.98–0.997)	0.008	1.004 (0.992–1.016)	0.543	1.009 (0.997–1.021)	0.164
Hb	0.973 (0.889–1.065)	0.550	—	—	—	—
LVEF	0.965 (0.949–0.983)	<0.001	0.999 (0.978–1.02)	0.898	0.99 (0.97–1.011)	0.367
WBC	0.968 (0.912–1.027)	0.275	—	—	—	—
CRP	0.999 (0.997–1.001)	0.116	—	—	—	—
PLT	0.996 (0.994–1.004)	0.117	—	—	—	—
Stent diameter	0.605 (0.365–1.001)	0.052	0.823 (0.481–1.409)	0.478	0.859 (0.503–1.467)	0.577
Stent length	1.002 (0.986–1.019)	0.764	—	—	—	—
Number of stents	0.997 (0.705–1.41)	0.986	—	—	—	—
Type of stent			—	—	—	—
BMS	Ref	—	—	—	—	—
DES	0.997 (0.705–1.41)	0.477	—	—	—	—
Anterior infarction	1.311 (0.876–1.961)	0.188	—	—	—	—
Inferior infarction	0.741 (0.493–1.113)	0.148	—	—	—	—
Other infarction	1.114 (0.487–2.549)	0.799	—	—	—	—
SS	1.088 (1.067–1.111)	<0.001	1.076 (1.051–1.102)	<0.001	—	—
RSS	1.083 (1.061–1.105)	<0.001	—	—	1.07 (1.043–1.097)	<0.001
Grace score	1.019 (1.013–1.026)	<0.001	1.01 (0.999–1.021)	0.066	1.01 (0.999–1.021)	0.078

BMS: bare metal stent, CAD: coronary artery disease, CreCl: creatinine clearance, CRP: C-reactive protein, DES: drug eluting stent, DM: diabetes mellitus, Hb: hemoglobin, HbA1C: hemoglobin A1C, HL: hyperlipidemia, HT: hypertension, LVEF: left ventricular ejection fraction, MACE: major adverse cardiac events, PLT: platelet, RSS: residual SYNTAX score, SS: SYNTAX score, WBC: white blood cell.