Table 3.

Search strategy for identification of relevant studies in Medline and EMBASE

Database	Search terms
	"keywords"
Medline	"emergency medical services" AND "intubation, intratracheal"
EMBASE	"emergency care" AND "intubation/or respiratory tract intubation"
	"title"
Medline	"prehospital" AND "intubation"
Medline	"pre-hospital" AND "intubation"
Medline	"out-of-hospital" AND "intubation"
Medline	"prehospital" AND "RSI" OR "rapid sequence induction"
Medline	"pre-hospital" AND "RSI" OR "rapid sequence induction"
Medline	"out-of-hospital" AND "RSI" OR "rapid sequence induction"
EMBASE	"prehospital" AND "intubation"
EMBASE	"pre-hospital" AND "intubation"
EMBASE	"out-of-hospital" AND "intubation"
EMBASE	"prehospital" AND "RSI" OR "rapid sequence induction"
EMBASE	"pre-hospital" AND "RSI" OR "rapid sequence induction"
EMBASE	"out-of-hospital" AND "RSI" OR "rapid sequence induction"