Double product reflects the association of heart rate with MACEs in acute coronary syndrome patients treated with percutaneous coronary intervention

Table 2 Full-adjusted multivariate analysis using Cox proportional hazards regression testing the relation between double product and two-year MACEs

Characteristic	Relative risks	95% CI	P value
DP	.859	0.554–1.333	0.499
Gender	1.142	.846–1.541	.387
hypertension	1.537	1.118–2.115	.008
Diabetes mellitus	1.308	.981–1.743	0.067
Dyslipidemia	.893	.646–1.233	0.492
SBP			0.605
Q1(<120 mmHg)	reference
Q4(>140 mmHg)	.786	.498–1.240	.301
Heart rate			0.012
Q1(<66 bpm)	reference
Q4(>80 bpm)	1.746	1.083–2.817	.022
Age			0.000
Q1(<54 years)	reference
Q4(>67 years)	3.017	2.017–4.512	.000
Body mass index			0.155
Q1(<23 kg/m²)	reference
Q4(>26 kg/m²)	.647	.438–0.957	.029

MACEs main adverse cardiovascular events, DP Double product, SBP systolic blood pressure, Q1 first quartile, Q4 fourth quartile

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