Items found	Embase	Items found	Cochrane	Items found	KoreaMed	Items found
2960	(('geriatric anesthesia'/de) AND ('perioperative period'/de OR 'preoperative care'/de OR 'peroperative care'/de OR 'postoperative care'/de)) OR (anesthesia/de AND ('perioperative period'/de OR 'preoperative care'/de OR 'peroperative care'/de OR 'postoperative care'/de) AND (geriatrics/de OR aged/exp))	827	[mh Anesthesia] AND ([mh ^"Perioperative Care"] OR [mh "Preoperative Care"] OR [mh "Intraoperative Care"] OR [mh "Postoperative Care"]) AND ([mh Geriatrics] OR [mh Aged])	3
	(an*sthesia* OR postan*sthe* OR an*sthetic):ti,ab		(an*sthesia* OR postan*sthe* OR an*sthetic):ti,ab		(anesthesia* OR anaesthesia* OR anesthetic OR anaesthetic)
	(perioperative* OR preoperative* OR intraoperative* OR postoperative* OR peri-operative* OR pre-operative* OR intra-operative* OR post-operative*):ti,ab		(perioperative* OR preoperative* OR intraoperative* OR postoperative* OR peri-operative* OR pre-operative* OR intra-operative* OR post-operative*):ti,ab		(perioperative* OR preoperative* OR intraoperative* OR postoperative* OR peri-operative* OR pre-operative* OR intra-operative* OR post-operative*)
	(geriatric OR geriatrics OR elder OR elders OR elderl* OR older OR aged OR senior OR seniors OR gerontolog* OR frail OR frailty OR 'very old' OR (old NEXT/1 (patient OR patients OR inpatient OR inpatients))):ti		(geriatric OR geriatrics OR elder OR elders OR elderl* OR older OR aged OR senior OR seniors OR gerontolog* OR frail OR frailty OR "very old" OR (old NEXT/1 (patient OR patients OR inpatient OR inpatients))):ti		(geriatric OR geriatrics OR elder OR elders OR elderl* OR older OR aged OR senior OR seniors OR gerontolog* OR frail OR frailty OR "old patient" OR "old patients" OR "old inpatient" OR "old inpatients" OR "very old")
1420	#2 AND #3 AND #4	2038	#2 AND #3 AND #4	738	#2 AND #3 AND #4
4262	#1 OR #5	2768	#1 OR #5	740
	review:it OR 'meta analysis'/exp OR 'systematic review'/de OR 'multicenter study'/de OR 'observational study'/de OR 'randomized controlled trial'/exp		random*:ti,ab
1197	#6 AND #7	702	#6 AND #7	548
	Animal/exp NOT (Human/exp AND Animal/exp)
	(adolescent/exp OR adult/de OR 'middle aged'/de OR 'young adult'/de OR juvenile/exp) NOT (aged/exp AND (adolescent/exp OR adult/de OR 'middle aged'/de OR 'young adult'/de OR juvenile/exp))		([mh Adolescent] OR [mh ^Adult] OR [mh "Middle Aged"] OR [mh "Young Adult"] OR [mh Child] OR [mh Infant]) NOT ([mh Aged] AND ([mh Adolescent] OR [mh ^Adult] OR [mh "Middle Aged"] OR [mh "Young Adult"] OR [mh Child] OR [mh Infant]))
1182	#8 NOT (#9 OR #10)	671	#6 NOT #10	546		361
502	([english]/lim OR [korean]/lim) AND [2009-2019]/py	366	Publication date from 2009/01/01	399	(DP:2009:2019), except case report	284
502		366		399		284
502		183		191		276
1152