Table 1.

Search string.

Operator	Field	Context	Focus
AND (main search term)	Evaluation (A)	Digital health intervention (B)	User-centered (C)
OR (synonyms)	evaluat*, evaluation method*, formative evaluation, summative evaluation, assess*	digital health intervention*, digital health technology, digital public health intervention*, digital health service*, electronic health record, mHealth, eHealth, health information technology, health Information platform, health diary	user-oriented, user-centered