Fig. 3

No significant difference in required number of probe repositionings when using stereotactic navigation versus without navigation. The plausible distributions of mean values consistent with the data are shown for the number of required probe repositionings A with stereotactic navigation and B without navigation assistance. C shows the pairwise differences of these sampled means and D indicates a strength of the effect accounting for the amount of variability within the groups. E summarizes the average values of the mean and standard deviation distributions consistent with the data. In plots A through D, the black bars show where 95% of the credible values lie (95% HDI). The green bars in C and D show the region of practical (clinical) equivalence (ROPE). In C, the 95% HDI fractionally includes zero and more than 40% of the 95% HDI overlaps with the ROPE, meaning there is no difference in number of repositionings with or without navigation. However, the effect size in D is strong and only fractionally includes zero, suggesting a trend towards fewer repositionings using stereotactic navigation