Table 1.

Search strategy.

Terms of interest	(i) Intellectual disability	(ii) Mental health	(iii) Definition	(iv) Measurement
Related terms and synonyms	learning disability, intellectual developmental disorder, disorders of intellectual development, mental retardation, mental deficiency	wellbeing, well-being	defining, concept, conceptualization, model, modeling	assessment, assessing, measuring, measure, scale
Combined and truncated	“intellectual* disab*” OR “learning disabilit*” OR (development* AND disorder* AND intellectual) OR (mental AND (retard* OR deficien*))	(mental AND health) OR wellbeing OR well-being	defin* OR concept* OR model*	measure* OR assess* OR scale*
Search string for PubMed	(“intellectual* disab*”[Title] OR “learning disabilit*”[Title] OR (development*[Title] AND disorder*[Title] AND intellectual[Title]) OR (mental[Title] AND (retard*[Title] OR deficien*[Title]))) AND ((mental[Title] AND health[Title]) OR (wellbeing[Title] OR well-being[Title])) AND ((defin*[Title/Abstract] OR concept*[Title/Abstract] OR model*[Title/Abstract]) OR (measure*[Title/Abstract] OR assess*[Title/Abstract] OR scale*[Title/Abstract]))