Hsu 2017.

Study characteristics
Patient sampling	Retrospective study
Patient characteristics and setting	Type of injury: blunt abdominal trauma Participants included in analysis: 438 Inclusion criteria: patients who had a FAST examination performed by qualified residents and had received subsequent formal radiographic or surgical evaluations
Index tests	Index test: FAST US
Target condition and reference standard(s)	Reference standard: subsequent surgical findings or formal Department of Radiology reference standards
Flow and timing
Comparative
Notes	May be incorporated into the review at the next update