Figure 2

Relationship between fibrosis stage and the FibroTest. Notched box plots showing the relationship between the stage of fibrosis and FibroTest. The horizontal line inside each box represents the median and the width of each box the median ± 1.57 interquartile range/vn to assess 95% level of significance between group medians. Failure of the shaded boxes to overlap signifies statistical significance (P <0.05). The horizontal lines above and below each box encompass the interquartile range (from 25^th to 75^th percentile), and the vertical lines from the ends of the box encompass the adjacent values (upper: 75^th percentile plus 1.5 times interquartile range, lower 25^th percentile minus 1.5 times interquartile range). PS means perisinusoidal fibrosis; PP means periportal fibrosis. Spearman correlation coefficient between FibroTest and stage of fibrosis after exclusion of blood donors was = 0.44 (n = 267, P < 0.0001) and was = 0.47 (n = 1304, P < 0.0001) if blood donors were included in the analysis as subjects without fibrosis.