“…HAMD items were pooled into the following factors: Core (items 1, 2, 7, 8, 10, 13), Sleep (items 4, 5, 6), Activity (items 7, 8), Psychic anxiety (items 9, 10), Somatic anxiety (items 11, 12, 13), Delusion (items 2, 15, 20). [32][33][34][35][36][37] The power of our sample for detecting differences amongst 5-HTTLPR variants was calculated considering an alpha value of 5% two-tailed. With these parameters in our sample we had a high power (0.80) to detect a medium-small effect size (0.35) that corresponded to a difference of approximately 2.1 points between the two alleles on the total HAMD.…”