Table 2.

Search strategy for PubMed (13 September 2021)

Concepts	PubMed search strategy	Research	No. of results
Guideline (controlled vocabulary)	“Guideline”(Publication Type] OR “Guidelines as Topic”(Mesh)	#1	204 535
Guideline (free text)	Guide*(TIAB] OR guideline(TIAB] OR guidelines(TIAB] OR “practice guideline”(TIAB] OR “practice guidelines”(TIAB)	#2	761 250
Total for guideline	#1 OR #2	#3	866 374
Paediatric (controlled vocabulary)	adolescent(MeSH] OR “Child”(Mesh] OR “Infant”(Mesh] OR “Pediatrics”(Mesh)	#4	3 748 622
Paediatric (free text)	adolescen*(TIAB] OR baby(TIAB] OR babies*(TIAB] OR boy(TIAB] OR boys(TIAB] OR child*(TIAB] OR girl*(TIAB] OR infan*(TIAB] OR kid(TIAB] OR kids(TIAB] OR neonat*(TIAB] OR newborn*(TIAB] OR paediatric*(TIAB] OR pediatric*(TIAB] OR “skeletally immature”(TIAB] OR toddler(TIAB)	#5	2 529 627
Total for paediatric	#4 OR #5	#6	4 467 031
Trauma (controlled vocabulary)	“Brain Hemorrhage, Traumatic”(MeSH] OR “Brain Injuries”(MeSH:NoExp)OR “Coma, Post-Head Injury”(MeSH:NoExp)OR “Craniocerebral Trauma”(MeSH:NoExp)OR “Diffuse Axonal Injury”(MeSH:NoExp)OR “Fractures, Bone”(Mesh] OR “Head Injuries, Closed”(MeSH:NoExp)OR “Head Injuries, Penetrating”(MeSH:NoExp)OR “Intracranial Hemorrhage, Traumatic”(MeSH] OR “Orthopedics/surgery”(Mesh] OR “Skull Fractures”(MeSH] OR “Spinal Cord Injuries”(Mesh] OR “Wounds and Injuries”(Mesh)	#7	946 800
Trauma (free text)	Fractur*(TIAB] OR Injur*(TIAB] OR TBI(TIAB] OR trauma(TIAB)	#8	1 272 601
Total for trauma	#7 OR #8	#9	1 720 079
Overall	#3 AND #6 AND #9	#10	12 522
Exclusion 1	#10 NOT (Editorial(ptyp] OR Letter(ptyp] OR Case Reports(ptyp] OR Comment(ptyp))	#11	11 232
Exclusion 2	Limit to articles since 2007	#12	8358