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. 2013 Oct 1;13:80. doi: 10.1186/1471-2261-13-80

Table 1.

Comparison of clinical characteristics according to BMI categories

BMI
≤21 kg/m2
N = 11
21-25 kg/m2
N = 52
>25 kg/m2
N = 108
P-value
Clinical characteristics        
Age, years
74 (10)
70 (11)
67 (10)
0.04¶
Sex, female %
46
37
20
0.04†
eGFR, ml/min/m2
77 (31)
66 (29)
74 (31)
0.27¶
CHF Duration*, months
1.5 (1–69)
3 (2–30)
6 (3–36)
0.17†
LVEF, %
34 (8)
30 (9)
30 (8)
0.35¶
NYHA class I/II, %
82
73
73
0.81†
Type 2 Diabetes Mellitus, %
9
15
33
0.02†
P-sodium, mmol/l 138 (3) 137 (4) 138 (3) 0.35¶

P-value is a comparison of mean (¶ = ANOVA)/ median/percentages († = Kruskal Wallis Test/Chi2 Test) between patients with BMI ≤ 21, 21–25 and BMI >25 kg/m2.

Mean (SD), * = median (interquartile range); ¶ = ANOVA; † = Pearson chi2 test/Kruskal Wallis Test.

Abbreviations: BMI: body mass index, CHF: chronic heart failure, eGFR: estimated glomerular filtration rate, LVEF: left ventricular ejection fraction.