P-491 - Sensitivity to changes during antidepressant treatment: a comparison of unidimensional depression rating scales in patients with minor depression

In the efficacy evaluation of antidepressant treatments the total score of the Hamilton Depression Rating Scale (HAMD) is still regarded as the’gold standard’. Studies suggest that unidimensional subscales of the HAMD, which capture the core depressive symptoms, outperform the full HAMD regarding the detection of antidepressant treatment effects. The present study compared several unidimensional subscales of the HAMD and the Inventory of Depressive Symptomatology (IDS) regarding their sensitivity to changes in depression symptoms in a sample of patients with minor depression (MIND). Biweekly IDS-C28 and HAMD17 data from 287 patients of a 10-week randomised, placebo-controlled trial comparin…