Table 2

Professional groups and respective data sources

	Paramedics	CCPs	PHCC physicians
Professional guidance and SOPs	JRCALC guidelines	JRCALC guidelines GWAS CCT SOPs	IBTPHEM curriculum GWAS CCT SOPs
Equipment	DCA and RRV; paramedic drug bag	CCT RRV and helicopter; CCP drug bag	CCT RRV and helicopter; CCT drug bag
Log sheets	GWAS PCFs	GWAS PCFs	GWAS PCFs
Direct observation	Paramedics on DCAs and RRVs	CCPs on RRVs	PHCC physicians on RRVs
Provider survey	Three paramedics	Three CCPs	Three PHCC physicians

CCP, critical care paramedic; CCT, critical care team; DCA, double-crewed ambulance; GWAS, Great Western Ambulance Service; IBTPHEM, Intercollegiate Board for Training in Pre-hospital Emergency Medicine; JRCALC, Joint Royal Colleges Ambulance Liaison Committee; PCF, patient care form; PHCC, prehospital critical care; RRV, rapid response vehicle; SOP, standard operating procedure.