6.1
The Committee recognised the difficulties in conducting research on repetitive transcranial magnetic stimulation (rTMS) for depression, in the context of the variable natural history of depression, the challenges of providing sham treatment, and a variable and often small response. Despite large numbers of patients in the published studies, there were difficulties in assessing the effect size. Nevertheless, the Committee noted consistently positive outcomes in many studies and a good safety profile. These considerations underpinned the recommendations in 1.1 and 1.2.