Table 2.

A synergistic impact of BMI and gamma gap on heart failure with different adjustment models.

Heart failure	Hazard ratio (95% confidence interval), P value
	High BMI, low gamma gap (n = 286)	Low BMI, low gamma gap (n = 387)	High BMI, high gamma gap (n = 128)	Low BMI, high gamma gap (n = 186)
Model 1	Reference	1.79 (1.24–2.59), P = 0.002	2.03 (1.26–3.26), P = 0.004	3.70 (2.44–5.59), P <0.001
Model 2	Reference	1.76 (1.20–2.56), P = 0.004	1.82 (1.11–2.99), P = 0.017	3.76 (2.45–5.77), P <0.001
Model 3	Reference	1.62 (1.08–2.42), P = 0.019	1.58 (0.94–2.65), P = 0.082	2.82 (1.79–4.48), P <0.001

Model 1: unadjusted; model 2: adjusted for age and sex; model 3: adjusted for age, gender, heart rate, diastolic blood pressure, hemoglobin, albumin, high density lipoprotein cholesterol, creatinine, fasting plasma glucose, C-reactive protein and N-terminal pro-brain natriuretic peptide.

BMI body mass index.