Figure 4

Boxplots including multiple comparisons show heterogeneity scores for the pathological grades. Differences between each group were analyzed using one-way ANOVA with Tukey’s post-hoc test: superscript a: II-B vs. III-B; superscript b: II-B vs. III-M; superscript c: II-B vs. V/VI-M; superscript d: III-B vs. III-M; superscript e: III-B vs. V/VI-M; superscript f: III-M vs. V/VI-M. The short dashed line indicates the mean heterogeneity score in each group, and the heterogeneity score in normal regions without nodules refers to the reference score for comparison.