Table 2.

Mortality relative to studied variables including information derived from exploratory analysis (Cox proportional hazards model)

Variables	p	Hazard ratio	95% Confidence interval
Serum sodium	< 0.001	0.94	(0.91; 0.96)
Serum creatinine	< 0.001	1.47	(1.27; 1.69)
Etiology	0.09	0.91	(0.81; 1.02)
Ethnicity	0.73	0.97	(0.80; 1.17)
Gln27Glu #	0.01	5.48	(1.50; 20.08)
Age	< 0.001	1.03	(1.02; 1.05)
Age * Gln27Glu #	0.004	0.97	(0.95; 0.99)
Baseline beta-blocker use	0.001	2.30	(1.43; 3.71)

^# dominant model (GlnGln genotype reference versus GlnGlu + GluGlu genotypes)

Serum sodium, serum creatinine and age included as continuous variables

Etiology (1. Chagasic, 2 Idiopathic, 3 Hypertensive, 4 Isquemic, 5 Heart failure due to valve disease)