Spss for windows version 13.1

Statistical analysis was performed to assess potential links between the bilateral or unilateral nature of the related epilepsy and EZ location / organization, as well as several clinical and imaging data. Qualitative clinical data between the two groups (UTLE and BTLE) were compared using chi square or Fisher exact tests. EI values computed from mesiotemporal regions were compared between the two groups (BTLE, UTLE). All statistical tests were performed on mean EI values calculated from all available seizures for each patient. A total of 116 seizures were analyzed (~ 3.8 seizures / patient). EI values were averaged over different subgroups of structures (hippocampal structures including aHip and pHip; subhippocampal structures including EC, pPHG and iTP; amygdala). They were then compared using non-parametric tests (Mann-Whitney) because values did not follow normal distribution. A p-value smaller than or equal to 0.05 was considered to be statistically significant. Statistical tests were performed with the software SPSS for Windows, version 13.1.

The results were reported as the means ± standard deviation. Data analyses were performed using the statistical software SPSS for Windows (version 13.1; SPSS, USA). The biochemical parameter analyses were performed using the one-way ANOVA, followed by Bonferroni analyses. The Kruskal-Wallis test was used to compare the groups for histopathologic parameters. A Bonferroni-adjusted Mann-Whitney U test was used to compare the two groups. The results are given as the mean ± SD. P values of less than 0.05 were regarded as statistically significant.