Table 4.

Univariable and Cox proportional multivariable regression for 18‐month cardiac mortality

Univariable regression model for 18‐month cardiac mortality
Variable	HR	95% CI	P
EBA upper quartile	3.74	1.95–7.20	<0.001
High‐risk HF aetiology a	3.38	1.70–6.69	<0.001
BNP (for each 10 units increase)	1.007	1.004–1.010	<0.001
Serum creatinine	1.32	1.02–1.70	0.033
Left ventricular ejection fraction	0.95	0.91–0.99	0.011
Age	1.024	0.996–1.052	0.092
Gender	1.64	0.76–3.52	0.206
Haemoglobin	0.85	0.71–1.02	0.087
Sodium	0.96	0.85–1.08	0.505
Body mass index	0.95	0.89–1.01	0.114
Diabetes	0.70	0.33–1.51	0.368
NYHA 3	1.83	0.70–4.81	0.219
NYHA 4	11.71	1.68–81.88	0.013
Cox proportional multivariable regression model for 18‐month cardiac mortality
Variable	HR	95% CI	P
EBA upper quartile	2.52	1.24 – 5.13	0.011
High‐risk HF aetiology a	3.07	1.52–6.19	0.002
BNP (for each 10 units increase)	1.005	1.002–1.009	0.002
Serum creatinine	1.32	0.97–1.81	0.082
Left ventricular ejection fraction	0.97	0.92–1.01	0.115
NYHA 4	2.59	0.28–23.95	0.401

BNP, B‐type natriuretic peptide; EBA, exhaled breath acetone; HF, heart failure; NYHA, New York Heart Association.

^aChagasic and ischaemic aetiology.