Table 2. Univariate Cox analysis for cardiac death.

Variables	HR (95% CI)	P-value
*Refers to Model 1 which consider UA as continuous value in the Cox survival analysis. **Refers to Model 2 which consider UA as categorical value in the Cox survival analysis. CI: confidence interval; HR: hazard ratio; UA: uric acid.
Male	0.595 (0.286−1.237)	0.165
Age	1.079 (1.046−1.114)	< 0.001
Body mass index	0.885 (0.794−0.986)	0.027
Atrial fibrillation	0.293 (0.115−0.498)	< 0.001
Hemoglobin	0.964 (0.947−0.981)	< 0.001
Creatinine	1.019 (1.012−1.027)	< 0.001
High-sensitivity C-reactive protein	1.136 (1.070−1.207)	< 0.001
Total cholesterol	0.722 (0.486−1.071)	0.106
Low-density lipoprotein cholesterol	0.860 (0.553−1.338)	0.505
Ventricular septum thickness	0.951 (0.883−1.023)	0.176
Interventricular septum/Left ventricular posterior wall ratio	0.305 (0.113−0.826)	0.02
Left ventricular outflow tract at rest, mmHg	0.980 (0.967−0.994)	0.004
Left ventricular ejection fraction	0.980 (0.936−0.974)	< 0.001
UA*, μmol/L	1.006 (1.003−1.009)	< 0.001
UA levels**
Tertile 1 (≤ 318 μmol/L)	Reference
Tertile 2 (319 to 397 μmol/L)	1.315 (0.417−4.146)	0.64
Tertile 3 (≥ 398 μmol/L)	3.158 (1.165−8.562)	0.024