Table 1.

Sample, Phenomenon of Interest, Design, Evaluation, Research type search strategy.

Content	Description	Examples of search terms
Sample	Clients aged between18 and 65 years. Clients with diagnosis of mental disorder by the Diagnostic and Statistical Manual of Mental Disorders or International Classification of Diseases undergoing IBTa.	“adult” OR “client’” OR “user’” OR “patient’.” “mental disorder” OR “psychological disorder.”
Phenomenon of interest	Clients’ experiences or perceptions of a vast array of domains undergoing an IBT.	“facilitators” OR “barriers” OR “acceptability” OR “adherence” OR “dropout” OR “negative effects.” “Internet” OR “Internet based treatments” OR “online treatments” OR “Internet interventions” OR “e-therapy” OR “web based” OR “self-applied” OR “blended” OR “computer-based” OR “smartphone based intervention.”
Design	Studies that allow the extraction of qualitative data.	“Interviews” OR “focus groups” OR “questionnaire” OR “survey” OR “e-mail.”
Evaluation	Experiences, perspectives, insights, motivations or views of participants undergoing an IBT (outcome measures).	“experience” OR “view” OR “opinion” OR “attitude” OR “perception” OR “belie*” OR “belief” OR “feeling.”
Research type	Qualitative studies or mixed-methods studies.	“qualitative” OR “mixed method.”

^aIBT: internet-based treatment.