It's super tiny group anyway - the experiment is highly underpowered even if they did check control group. Most importantly it is not a cross design, and even

It's super tiny group anyway - the experiment is highly underpowered even if they did check control group. Most importantly it is not a cross design, and even that would need in excess of hundred patients to be meaningful. As is they can be measuring the effect of attention and any kind of change on depression, given some genetic, phenotypical or environmental susceptibilities incidentally found in their treatment group. Meaning the conclusion is not possible to generalize. These tiny studies, especially of low quality and poor design are an annoying waste of time and money.