Implantation Location
After the Bartlett Test showed that the LVEF pre-procedure and LVEF at
follow-up had roughly equal variance with a P-value of 0.0457, the
Two-Way ANOVA showed an elevated P-value of 0.993 (greater than the
significance level of 0.05), which means that there is no significant
difference between the pre-implantation and the post-implantation LVEF
means of the 3 locations or an interaction between the location and the
pre/post-implantation LVEFs.
This leads us to another important finding. The group means for LVEF
pre/post-implantation were exactly equal in the mid and high septum
locations (Table 4 and Figure 2). This was not an error in our
statistical analysis because the standard deviations for these two
groups were different.