Box plots showing the distribution of PDFF for groups divided by several self-reported factors.

<p>Top left—Diabetes. Top right—Vascular problems. Bottom left—self-reported weight change over the year prior to imaging visit. *** indicates p < 0.001 and ** indicates p < 0.01 from a two-sided K-S test.</p

Representative MRI images from the UKBiobank cohort, showing individuals with 1%, 18% and 28% PDFF.

<p>Clear differences in the intensity of the liver can be seen, with the liver appearing brighter as PDFF increases.</p

Age and body mass index summary (BMI) statistics of cohort.

<p>Age and body mass index summary (BMI) statistics of cohort.</p

Details of UKBiobank data fields used in this analysis.

<p>Details of UKBiobank data fields used in this analysis.</p

Distribution of liver fat by age group and sex.

<p>The dashed line shows the population median PDFF (2.11%). *** indicates p < 0.001 from a two-sided K-S test. Significance lines are only shown for p <0.001.</p

Cohort demographics.

<p>Cohort demographics.</p

Summary statistics for whole cohort PDFF and for subset with 'healthy' BMI.

<p>Summary statistics for whole cohort PDFF and for subset with 'healthy' BMI.</p

Relationship between proton density fat fraction and body mass index.

<p>PDFF is plotted on a log scale. 83 (1.8%) individuals are in the top left quadrant, 835 (18.1%) in the top right, 1983 (42.9%) in the bottom right and 1696 (36.7%) in the bottom left quadrant.</p

Distribution of PDFF in whole cohort.

<p>There are 84 individuals with PDFF > 20%, who are not shown here. The darker part of each bar corresponds to the individuals with BMI > 25 kg/m².</p