EBSCO - MEDLINE and CINAHL
"on scene time*" OR "time on scene" OR "onscene time" OR (scene N2 time*) OR (prehospital N1 time*) OR "on site time*" OR (on N3 scene)
OVID – EMBASE and EMCARE
"on scene time*" OR "time on scene" OR "onscene time*" OR (scene ADJ2 time*) OR (prehospital ADJ1 time*) OR "on site time*"
NICE Evidence Search - MEDLINE and CINAHL
("On scene time" OR "time on scene" OR "onscene time" OR (scene ADJ2 time) OR (Prehospital adj1 time*) OR "on site time").ti,ab
NICE Evidence Search – EMBASE and EMCARE
Updated 02 November 2020