Table 4.

Distribution of the variables based on univariate analysis of risk and Cox regression

Variable	Univariate analysis		Multivariate analysis
	Hazard Ratio 95%CI	Wald coef. (p value)	Hazard Ratio 95%CI	Wald coef. (p value)
NSVT	3.0 (1.02 - 8.48)	4.01 (0.045)	3.83 (1.29 - 11.35)	5.84 (0.016)
ILAV	3.4 (1.58 - 7.24)	9.84 (0.002)	3.51 (1.63 - 7.52)	10.77 (0.001)
Sodium	0.9 (0.86 - 1.01)	2.80 (0.095)	0.98 (0.90 - 1.07)	0.22 (0.639)
FC	1.6 (0.96 - 2.86)	3.22 (0.073)	1.34 (0.76 - 2.36)	1.03 (0.311)

NSVT: non-sustained ventricular tachycardia; ILAV: indexed left atrial volume; FC: functional class; CI: confidence interval; coef.: coefficient.