Prognostic Utility of the Combination of Platelet Count with Neutrophil-to-Lymphocyte Ratio in Aged Patients with Acute Myocardial Infarction Undergoing Percutaneous Coronary Intervention

Table 4

Predictors of long-term mortality in univariable and multivariable cox regression analyses.

Variables	Univariable			Multivariable
	HR	95% CI		HR	95% CI
Age	1.082	1.039–1.126	<0.001	1.066	1.020–1.115	0.005
Gender (male)	1.487	0.954–2.317	0.080	NS	NS	NS
Gensini score	1.002	0.998–1.006	0.225
Killip class	2.011	1.009–2.513	<0.001	1.490	1.165–1.905	0.001
LVEF	0.960	0.944–0.977	<0.001	0.974	0.956–0.992	0.005
Smoke and drink	1.110	0.705–1.747	0.652
Hypertension	1.262	0.797–1.998	0.321
Prior CAD	1.010	0.486–2.098	0.978
Diabetes	1.372	0.848–2.218	0.197
Total cholesterol	1.035	0.850–1.261	0.729
Total triglyceride	0.992	0.784–1.255	0.948
HDL	1.338	0.870–2.057	0.185
LDL	1.037	0.825–1.303	0.756
Creatinine	1.009	1.005–1.014	<0.001	1.006	1.000–1.011	0.035
WBC count	1.111	1.058–1.167	<0.001	NS	NS	NS
Neutrophil count	1.118	1.066–1.173	<0.001	NS	NS	NS
Lymphocyte count	0.564	0.376–0.847	0.006	NS	NS	NS
PLC > 198.00	1.001	0.998–0.004	0.549
NLR > 4.88	1.051	1.028–1.074	<0.001	NS	NS	NS
PLC > 198.00 and NLR > 4.88	3.695	1.893–7.212	<0.001	2.791	1.406–5.538	0.003

HR, hazard ratio; CI, confidence interval; NS, no statistical significance; CHD, coronary heart disease; LVEF, left ventricular ejection fraction; HDL, high-density lipoprotein cholesterol; LDL, low-density lipoprotein cholesterol; WBC, white blood cell; PLC, platelet count; NLR, neutrophil-to-lymphocyte ratio.