Handoffs and transitions in critical care (HATRICC): protocol for a mixed methods study of operating room to intensive care unit handoffs

Table 2 Eligible subjects in study population, stratified by study phase

Study component	Recruitable population*	Target sample size
Observation (first round)	440 patients	40-60 patients
	366 clinicians	40-60 handoffs: each consisting of 4-6 clinicians
Surveys (first round)	460 clinicians:	460 clinicians
	100 OR nurses
	100 attending physicians and fellows
	130 ICU nurses
	120 residents and CRNAs
	12 NPs/PAs
Interviews (first round)	12 NPs/PAs	12 NPs/PAs
Focus groups (first round)	130 ICU nurses	3 focus groups of 5-8 participants
		(total 15 to 24 ICU nurses)
	120 resident physicians and CRNAs	3 focus groups of 5-8 participants
		(total 15 to 24 residents/CRNAs)
Simulations	12 NPs/PAs	4 NPs/PAs (1 per simulation)
	120 residents	8 residents (2 per simulation)
	130 ICU nurses	8 nurses (2 per simulation)
Observation (second round)	440 patients	40-60 patients
	366 clinicians	40-60 handoffs consisting of 4-6 clinicians each
Surveys (second round)	460 clinicians:	460 clinicians
	100 OR nurses
	100 attending physicians and fellows
	130 ICU nurses
	120 residents and CRNAs
	12 NPs/PAs
Interviews (second round)	12 NPs/PAs	12 NPs/PAs
Focus groups (second round)	130 ICU nurses	2 focus groups of 5-8 participants
		(total 10 to 16 ICU nurses)
	120 resident physicians and CRNAs	2 focus groups of 5-8 participants
		(total 10 to 16 residents/CRNAs)

Abbreviations: CRNA certified registered nurse anesthetist, ICU intensive care unit, NP nurse practitioner, OR operating room, PA physician assistant.
*Numbers given are estimates, as patient volume and clinician staff numbers are expected to vary over the course of the study.

ISSN: 1471-2482