"Note that the primary outcomes are not patient clinical outcomes, i.e., whether patients benefited from being assigned to active treatment versus control. The study was explicitly described as a feasibility and acceptability study.
Psychotherapy studies are commonly described in the literature as pilot and feasibility studies, mainly to escape the criticism that the study was small and underpowered. But, if so, effect sizes for patient outcomes should be presented because they are likely to be exaggerated and not generalizable to what would occur in a larger, better controlled study or in routine practice.
I wonder if the consent forms provided to patients indicated that the investigators were not interested in whether they benefited from treatment."