Figure 4. Mean (±SD) of force ratio and FP_Peak for various grades of CTS severity based on nerve conduction study.

There were statistical differences in the results of functional sensibility between each pair of the CTS subgroups except between the subgroup with minimal and mild severity. (Statistical analysis method: the mixed effect model with Bonferroni multiple comparisons test; the significance threshold for Bonferroni post hoc test was set at p = 0.008.).