Table 1.

Search strategy on databases.

Participant, concept, and context scheme	#	Search string	Hits on MEDLINE (July 18)	Hits on CINAHL (July 18), n	Hits on APA PsycInfo (July 18), n	Hits on Web of Science (July 18), n	Hits on Scopus (July 19), n	Hits on WorldCat (July 20), n	Hits on JBIa (July 20), n
Digital health twin in older care settings	1	“digital health twin*” OR “digital twin*” OR “digital phenotype” OR “digital shadow” OR “virtual patient*” OR “personalised health model*” OR “digital patient model” OR “in silico patient*”	6,404,833	639	2982	11,763	17,051	36,108	2
Digital health twin in older care settings	2	older OR aged OR elderly OR senior* OR elder OR “old person*” OR “older person*” OR “old people” OR “older adult*” OR “older people” OR geriatric*	2457	1,251,839	829,113	5,690,683	6,817,585	31,208,688	1773
	3	# 1 AND #2	204	46	21	449	327	1682	0
Health care setting	4	health* OR hospital* OR care* OR caring OR nursing OR treatment OR aid OR management OR therapy	18,297,577	5,152,991	2,786,771	21,428,220	23,457,440	5180	2837
Combined	5	#3 AND #4	189	43	19	308	250	1384	0
Filters	6	#3 + English, from 2002 onward (exc meeting abstract, editorial material and book chapters.	197	45	21	428	309	8	0
Filters	7	#5 + English, from 2002 onward (exc meeting abstract, editorial material and book chapters.	184	43	19	300	237	4	0

^aJBI: Joanna Briggs Institute.