The Duncan test was used for the post hoc analysis. The dependent measures examined in the analyses were the initial response and acute adaptation by calculating 6 SS subscales scores and the 2 BAES subscale scores. The statistical analysis of the comparison data was performed using SAS program (version 9.1.3, SAS Institute Inc., Cary, NC). The statistical significance level was 0.05. We used the software Haploview to visualize linkage disequilibrium (LD) relationships between GABRA2 SNPs (Barrett et al., 2005).
