Fig. 1

a The prevalence of abnormal lipid profiles stratified by different BNP quartiles (*, P <0.01 vs. Q1; **, P <0.001 vs. Q1). The cut-off points of dyslipidemia were defined as described in the methods. Chi-square test was used to compare the difference. b The difference of BNP levels between normal and abnormal groups according to lipid profiles. The lines denote the median, the boxes represent interquartile range, and the bars indicate the lowest or highest BNP levels. Boxes in grey denote patients with abnormal lipid profiles, whereas open boxes represent patients with normal lipid profiles (Mann–Whitney U test was used. *, P <0.01 vs. normal group; **, P <0.001 vs. normal group). Note that numbers on the right vertical axis are corresponding to log-transformed values on the left axis