Usefulness of Serum Calcium in the Risk Stratification of Midterm Mortality among Patients with Acute Coronary Syndrome

Table 2

Hazard ratios and 95% CIs of midterm mortality according to quartiles of serum calcium among patients with acute myocardial infarction.

	Serum calcium
Model	Q1	Q2	Q3	Q4
	HR (95% CI)	HR (95% CI)	HR (95% CI)	HR (95% CI)
	Deaths/N	45/645	27/648	23/648	29/653
Model 1	1.89 (1.14, 3.12)	1.14 (0.65, 1.99)	Ref	1.22 (0.70, 2.10)
	0.013	0.646		0.482
Model 2	1.78 (1.08, 2.94)	1.14 (0.65, 1.98)	Ref	1.25 (0.72, 2.15)
	0.025	0.653		0.433
Model 3	1.86 (1.05, 3.31)	0.93 (0.49, 1.77)	Ref	1.48 (0.81, 2.70)
	0.033	0.833		0.206

Model 1: crude. Model 2: adjusted for age and sex. Model 3: adjusted for age (continuous), sex, history of hypertension, history of stroke, history of coronary heart disease, complicated heart failure, complicated arrhythmia, complicated atrioventricular block, aspirin on admission, percutaneous coronary intervention, coronary angiography, hemoglobin (continuous), uric acid (continuous), eGFR (continuous), serum phosphate (continuous), serum magnesium (continuous), serum potassium (continuous), LVEF (continuous), LAD (continuous), LVEDD (continuous), and IVST (continuous).