Table 3. Multivariate Cox analysis for cardiac death.

Variables	HR (95% CI)	P-value
*Refers to Model 1 which consider UA as continuous value in the multivariate Cox survival analysis. **Refers to Model 2 which consider UA as categorical value in the multivariate Cox survival analysis. CI: confidence interval; HR: hazard ratio; UA: uric acid.
Age	1.030 (0.995−1.066)	0.109
Body mass index	0.884 (0.767−1.020)	0.090
Atrial fibrillation	0.270 (0.088−0.823)	0.021
Hemoglobin	0.965 (0.937−0.994)	0.018
Creatinine	0.684 (0.144−3.243)	0.632
High-sensitivity C-reactive protein	1.120 (1.015−1.237)	0.025
Interventricular septum/Left ventricular posterior wall ratio	0.412 (0.119−1.437)	0.164
Left ventricular outflow tract at rest, mmHg	0.978 (0.960−0.997)	0.095
Left ventricular ejection fraction	0.980 (0.945−1.028)	0.509
UA*, μmol/L	1.005 (1.001−1.009)	0.009
UA levels**
Tertile 1 (≤ 318 μmol/L)	Reference
Tertile 2 (319 to 397 μmol/L)	3.927 (0.666−23.162)	0.131
Tertile 3 (≥ 398 μmol/L)	4.732 (1.082−20.691)	0.039