Fig. 1.

Distribution of liver fat measurements by histology and PDFF.

Distribution of liver fat values in the pooled dataset of nine studies (N = 597). Purple bars denote histological steatosis, and the superimposed green bars denote PDFF. The colour-shaded background of the plot illustrates division of the x-axis into histological steatosis grades S0–S3 (S0: <5%; S1: 5–33%; S2: 34–66%; S3: >66%). The inset shows a density plot using the same data, depicting the distribution of histological steatosis and PDFF on a continuous scale (probability density function). The purple distribution denotes histology, and the green distribution denotes PDFF. PDFF, proton density fat fraction.