Table 5.

Identified gaps in the reviewed literature regarding characteristics of the participants.

Identified gap	Reason	Report	Percentage of studies reporting
Female participants overrepresented	More female than male participants in the studies	The studies had an average of 74.1% female participants	Sex was reported in 97.3% of the studies
Lack of studies directed at teenagers and young adults	Few studies of treatments directed at teenagers or young adults	11 studies directed at teenagers or young adults	100% of the studies reported or provided sufficient information to draw conclusions about age group in focus
Lack of studies directed at older adults	Few studies of treatments directed at older adults	4 studies included solely older adults	100% of the studies reported or provided sufficient information to draw conclusions about age group in focus
Lack of reports of comorbid disorders	Several studies where comorbid disorders were not described in detail or reported	24.3% of the studies did not include reports of comorbid disorders	75.7% of the studies reported comorbidity
Non-Western participants underrepresented	Few studies with participants from non-Western countries	6.3% of the studies recruited participants from non-Western countries	100% of the studies reported or provided sufficient information for conclusions about origin