Table 2. Predictors of death by Cox Regression analysis.

	Preserved LVF(N = 111)		Reduced LVF(N = 198)		All(N = 309)
	HR (95% CI)	P value	HR (95% CI)	P value	HR (95% CI)	P value
Age (years)	1.04 (1.02–1.07)	0.001	1.04 (1.02–1.05)	<0.001	1.04 (1.02–1.05)	<0.001
Gender (Male)	1.40 (0.80–2.42)	0.24	1.91 (1.32–2.78)	0.001	1.72 (1.28–2.31)	<0.001
Ischemic Heart Disease	0.54 (0.33–0.89)	0.02	0.99 (0.64–1.53)	0.97	0.78 (0.57–1.06)	0.12
Hypertension	0.82 (0.50–1.37)	0.45	0.89 (0.64–1.23)	0.47	0.86 (0.65–1.12)	0.26
Diabetes Mellitus	0.89 (0.54–1.49)	0.66	1.13 (0.79–1.62)	0.51	1.09 (0.82–1.45)	0.55
Atrial Fibrillation	1.04 (0.64–1.68)	0.88	1.31 (0.91–1.88)	0.15	1.22 (0.92–1.62)	0.17
Admission due to HF	0.90 (0.55–1.47)	0.67	1.00 (0.71–1.42)	0.99	0.97 (0.73–1.28)	0.81
Serum Na<135 mEq/L	1.25 (0.73–2.13)	0.41	1.87 (1.29–2.71)	0.001	1.69 (1.25–2.28)	0.001
Serum Urea* (mmol/L)	1.74 (1.10–2.76)	0.02	1.20 (0.91–1.57)	0.19	1.34 (1.07–1.68)	0.01
Hemoglobin (g/dl)	0.91 (0.79–1.04)	0.16	0.92 (0.84–1.01)	0.08	0.91 (0.84–0.98)	0.02
NYHA FC Class III-IV	2.35 (1.30–4.24)	0.004	1.98 (1.30–3.02)	0.001	1.93 (1.39–2.68)	<0.001
Reduced LVF	/		/		1.16 (0.87–1.55)	0.31

^*Log₁₀-transformed.