Table 1.

Description of eligibility criteria.

Criteria	Description
Population	The population of interest was research teams or organizations developing KPIs for a DHI.
Concept	The concept of interest was the development of KPIs for a DHI and how they were identified, defined, and established.
Context	The context was KPIs for a DHI. Specifically, we included computer and mobile interventions. This included remote and Web 2.0-based interventions delivered via technologies that give patients access to eHealth. These technologies included personal computers and applications for mobile technology such as iPad, Android tablets, smart phones, and Skype.
	We excluded studies that focused on monitoring devices such as telemonitoring/ telehealth or assistive technologies, as these studies involved the participation of more than one user, for example, the patient and the healthcare professional.
Study Design	Study design for inclusion were review articles, editorials, guidelines, quantitative research designs, qualitative research designs, and the grey literature.
Settings	There were no restrictions based on study settings.
Language	Only English language studies were included.
Year	There were no restrictions based on year of publication.
Publication Status	There were no restrictions based on publication status.

DHI: digital health intervention; KPI: key performance indicator.